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What are the Best Microbiome Tests? As interest in the human microbiome grows, various microbiome tests have emerged, each offering unique insights into our health. Understanding which tests are best suited for individual needs can help inform decisions regarding health management and lifestyle changes. Skin Microbiome Testing Skin microbiome testing involves collecting samples from the skin's surface using methods like swabs, tape strips, or skin scrapings to analyse the diversity and composition of microorganisms residing on the skin. The samples are then processed through DNA sequencing techniques to identify microbial species and their relative abundance. This testing provides insights into how the skin's microbial ecosystem impacts health conditions such as acne and eczema. Skin microbiome research is increasingly being used to develop personalised skincare products and therapeutic approaches. (Byrd et al., 2018) Stool Microbiome Testing Stool testing remains one of the most common and accessible methods for analysing the gut microbiome. These tests evaluate the diversity and abundance of microbial species, helping to identify imbalances linked to conditions such as irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and obesity. A study by Zhernakova et al. (2016) emphasises the utility of stool microbiome tests in detecting dysbiosis and understanding its relationship to health outcomes. Saliva Microbiome Testing Saliva microbiome testing is another non-invasive method, focusing on the oral microbiota. This test can provide insights into oral health, periodontal disease, and even systemic health conditions linked to the oral microbiome. A study by Aas et al. (2005) illustrates that the oral microbiome reflects changes in health status, making saliva testing an essential tool for early disease detection. Blood Microbiome Testing While less common, blood microbiome testing is gaining traction, especially for identifying systemic infections or chronic conditions. This testing method analyses microbial DNA present in the bloodstream, which can reveal insights into conditions like sepsis and cardiovascular diseases. A paper by Cheng et al. (2023) reviews the emerging concept of the blood microbiome, highlighting its potential role in human health and disease, while addressing existing controversies and the need for further research to understand its clinical implications. Tissue Biopsy Microbiome Testing Tissue biopsies are increasingly utilised for studying the microbiome within specific organs, particularly the gastrointestinal tract. This method allows for direct analysis of microbial communities in tissue samples, providing insights into diseases such as colorectal cancer and IBD. Recent advancements in next-generation sequencing have enhanced the ability to identify and characterise microbial populations in biopsies, as noted by Schulfer and Blaser (2015). Conclusion Choosing the right microbiome test depends on individual health concerns and goals. Stool and saliva tests are excellent for general gut and oral health insights, while blood and tissue tests offer deeper analysis for chronic diseases. As research continues to evolve, these tests will likely become even more integral to personalised healthcare and preventative strategies. References Aas, J. A., Paster, B. J., Stokes, L. N., Olsen, I., & Dewhirst, F. E. (2005). Defining the normal bacterial flora of the oral cavity. Journal of Clinical Microbiology, 43(11), 5721-5732. https://doi.org/10.1128/JCM.43.11.5721-5732.2005 Byrd, A. L., Belkaid, Y., & Segre, J. A. (2018). The human skin microbiome. Nature Reviews Microbiology, 16(3), 143-155. https://doi.org/10.1038/nrmicro.2017.157 Cheng, H. S., Tan, S. P., Wong, D. M. K., Koo, W. L. Y., Wong, S. H., & Tan, N. S. (2023). The blood microbiome and health: Current evidence, controversies, and challenges. International Journal of Molecular Sciences, 24(6), 5633. https://doi.org/10.3390/ijms24065633 Schulfer, A., & Blaser, M. J. (2015). Risks of antibiotic exposures early in life on the developing microbiome. PLoS Pathogens, 11(7), e1004903. https://doi.org/10.1371/journal.ppat.1004903 Zhernakova, A., Kurilshikov, A., Bonder, M. J., Tigchelaar, E. F., Schirmer, M., Vatanen, T., ... & Wijmenga, C. (2016). Population-based metagenomics analysis reveals markers for gut microbiome composition and diversity. Science, 352(6285), 565-569. https://doi.org/10.1126/science.aad3369

Introducing the Biome Mask™ Sequential Skin is proud to announce its biodegradable Biome Mask™ line designed to balance the skin microbiome and make your skin healthier. The Biome Mask™ line has five formulas to target five skin traits. Each is infused with serums that target specific concerns and uses prebiotics and postbiotics to balance the skin's microbiome. All masks have been tested in vivo. Made for all skin types Our formula, your benefits Semi-gel Tencel™ Versatile, soft & pleasant to the skin Eco-friendly Material Better for you and the planet 100% Cellulose Cellulose is the most abundant natural organic compound on Earth Remarkable Moisture Retention For long lasting benefits Click Here to see a Full List of our Ingredients How They Work Prebiotics Prebiotics beneficially affect the host by selectively stimulating the growth and/or activity of one or a limited number of bacteria on the skin, and thus improves host health. Feed your skin microbiome! Prebiotics act as good for the microbes on the skin, and allow good bacteria to grow and thrive. Probiotics Probiotics are living microorganisms that confer benefit to the host when applied to the body. Because probiotics are live bacteria, it is incredibly difficult to preserve and put into skincare products (especially when skincare contains preservatives). In fact, some products on the market that say they use probiotics, are actually using prebiotics or postbiotics. Postbiotics Postbiotics are the byproduct of fermented live bacteria (probiotics) or inactivated microorganisms. The process of fermentation releases nutrients inside of the bacteria and holds concentrated and nourishing skin health benefits that help to balance the skin microbiome. INGREDIENTS FROM MICROBIAL ORIGIN No INTENDED TO BE UTILISED BY THE HUMAN MICROBIOTA? No Yes Yes ARE THEY VIABLE? No Yes ORIGIN VIABILITY FUNCTION ORDINARY INGREDIENT ORDINARY INGREDIENT WITH PREBIOTIC FUNCTION INTENDED TO BE UTILISED BY THE HUMAN MICROBIOTA? PROBIOTIC INGREDIENT No Yes POSTBIOTIC INGREDIENT POSTBIOTIC INGREDIENT WITH PREBIOTIC FUNCTION Also available in a box of 5 Biome Masks™ Interested? What is Sequential's testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. Why is it necessary to test the microbiome in vivo? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. What type of sequencing technology does Sequential use for analysis? We offer four types of sequencing techniques including qPCR with our Smart Probes™, 16S, ITS and Shotgun Metagenomics. Using next-generation sequencing of the collection of microorganisms found on the body, during product usage, Sequential investigates the microbial diversity, and particular microorganisms we know are important and play a role in a healthy microbiome. Does Sequential offer claims certification for tested products? We provide our clients with a certification to claim “Maintains the Microbiome” subject to in vivo testing results which can be used in communication efforts. Once your product is tested with our qPCR Smart Probes™ and has shown favourable results in supporting the microbiome, we can certify your product with our Maintains the Microbiome certification seal. We have ensured that our seal and certification are backed by quantifiable data and scientifically significant markers. The aim is to ensure our clients feel confident in making their claims and can communicate the true benefit of their microbiome formulations.

TARGETED SKIN PANEL Malodor Targeted Panel 23 Smart Probes ™ Malodor Panel Validated targets: Corynebacterium species, Staphylococcus hominis, Cutibactrium acnes species Absolute Quantification End-to-end Service Qet a Quote Unlock the Secrets of Malodor with Sequential's Cutting-Edge Microbiome Testing Why Microbiome Testing for Malodor? Malodor, or body odor, affects millions of people globally, with studies suggesting that up to 90% of individuals experience some form of body odor during their lifetime, especially in areas such as the underarms, feet, and groin (American Society for Microbiology). This issue arises primarily due to interactions between sweat and the skin’s microbiome, where certain bacteria, like Corynebacterium and Staphylococcus , break down sweat molecules into odorous compounds. The composition of a person’s microbiome greatly influences the severity and type of body odor they experience, which highlights the need for microbiome-focused deodorant formulations. In vivo testing is crucial for deodorants because it allows scientists to see how the product affects both sweat production and the microbiome in real-world conditions. Without proper testing, deodorants might mask odors temporarily but disrupt the natural microbial balance, leading to skin irritation or increased malodour over time. By ensuring deodorants maintain a healthy microbiome, brands can create more effective, long-lasting solutions for body odor. Sequential is leading the way in microbiome testing for the industry. With a specialized focus on skin conditions, we have developed an innovative solution tailored to help you understand the root causes of malodor at the microbial level. Our proprietary sequencing panel is designed specifically to offer in-depth analysis of malodor-associated microbiota, giving you the tools to transform skincare solutions. Customized Analysis Tailored insights specific to malodor, allowing your R&D team to develop more personalized and effective products. Actionable Data Leverage detailed reports to guide formulation decisions and validate product efficacy with precision. Product Innovation New deoderants or enhancing existing lines, our data helps you create targeted solutions with proven results. Precision Sequencing Target specific microbial communities associated with malodor. Smart Probe s ™ Our dedicated team of scientists has developed a groundbreaking method for evaluating microbes through our Smart Probes™, a proprietary panel featuring 23 key microbes specifically identified as having the greatest impact on skin health, particularly in relation to malodor. To further investigate the complex relationship between body odor and the skin microbiome, we employ qPCR technology. This advanced technique enables us to precisely measure microbial populations on the skin, providing deeper insights into how imbalances in the microbiome contribute to malodor, such as the activity of bacteria like Corynebacterium and Staphylococcus . By carefully analyzing how deodorant and skincare products interact with odor-causing microbes, companies can develop solutions that not only target and reduce malodor but also support a healthy, balanced skin microbiome, ensuring long-lasting freshness and overall skin health. Malodor Panel Targets Corynebacterium species These bacteria are known to break down sweat into fatty acids and other compounds that contribute to body odor. They are particularly prevalent in areas like the armpits. Ågren MS, Ghathian KSA, Frederiksen AKS, Bjerrum MJ, Calum H, Danielsen PL, Menon J, Hædersdal M, Jorgensen LN. Zinc Oxide Inhibits Axillary Colonization by Members of the Genus Corynebacterium and Attenuates Self-perceived Malodour: A Randomized, Double-blind, Placebo-controlled Trial. Acta Derm Venereol. 2020 May 28;100(10):adv00145. doi: 10.2340/00015555-3499. PMID: 32399578; PMCID: PMC9137363. Staphylococcus hominis This bacterium is involved in the breakdown of sweat and the production of odor-causing compounds. It is commonly found in areas with high sweat gland activity. Lam, T.H., Verzotto, D., Brahma, P. et al. Understanding the microbial basis of body odor in pre-pubescent children and teenagers. Microbiome 6, 213 (2018). https://doi.org/10.1186/s40168-018-0588-z Cutibacterium acnes species Although better known for its role in acne, this bacterium also contributes to body odor by metabolizing sweat and producing odoriferous substances. Coenye T, Spittaels KJ, Achermann Y. The role of biofilm formation in the pathogenesis and antimicrobial susceptibility of Cutibacteriumacnes. Biofilm. 2021 Dec 9;4:100063. doi: 10.1016/j.bioflm.2021.100063. PMID: 34950868; PMCID: PMC8671523. Industry Leader in Absolute Quantification Sequential’s Smart Probe ™ qPCR approach to microbiome analysis can resolve species and subspecies, giving statistically significant findings between skin conditions on in vivo human samples, compared to conventional sequencing approaches. Relevant Research Don't Sweat It: How Deodorant Disrupts Your Underarm Microbiome Read More Articles

Sequential in the Press Avec ce test microbiome maison, 10 secondes m'ont suffit pour découvrir les besoins de ma peau Grâce au test microbiome, il est maintenant possible d’avoir une cartographie complète de l’état de sa peau : son âge réel, ses points forts, mais aussi ses carences. Un test tout droit sorti du futur qui offre également une série de recommandations personnalisées pour améliorer sa santé cutanée. Read Now! Sequential Announces New Collaboration Agreement to Quantify Skin Health New York, NY - March 15, 2023 – Sequential Skin Inc. (“Sequential”), the skin microbiome company developing next generation non-invasive skin testing and data-driven solutions for the skin microbiome, today announced that it has entered into a collaboration agreement with Johnson & Johnson Consumer Inc. Read Now! Symbiome Partners with Skin Microbiome Testing experts at Sequential to Revolutionize Beauty Industry Symbiome, A leading skincare company, has announced a unique partnership with Sequential - a pioneering skin microbiome testing company to bring the latest in microbiome science to the beauty industry. The collaboration will focus on developing and testing innovative skincare products that take into account the individual's unique skin microbiome. Read Now! Sequential Bio Wins Prestigious Allē Award Recognised as the “Most Significant” Testing Method in the Industry. After being listed as a finalist for best ‘Claims testing methods & tools’ alongside Evonik, and XCellR8 - Sequential Bio brings home top prize in C&T’s Allē Awards, 2022. Read Now! Microbiome start-up Sequential Bio debuts first in-vivo testing for personal care industry Microbiome specialist Sequential Skin debuts Sequential Bio, a microbiome testing provider for beauty and personal care companies seeking product certification. The testing is available for products targeting skincare, scalp, oral, intimate care, and general surfaces. Read Now! Gallinée lance le premier test de santé de la peau et du microbiome à réaliser chez soi Le microbiome cutané forme un ensemble de microorganismes contenant notamment des bonnes bactéries qui permettent à notre peau d’être protégée. Évidemment, ce n’est pas un aspect de la peau que l’on peut voir ou évaluer sans test spécifique ou à l'œil nu. Read Now! Understand before purchase: Microbiome testing can help consumers find the right products and eliminate waste Microbiome testing start-up Sequential Bio is seeking out brand partners to provide microbiome testing for the end consumer, which it believes can help improve the enduring issue of waste in the beauty industry. Read Now! Sequential Bio Unveils its European Lab testing HQ, in London In an effort to keeping the entire testing process in-house, allowing for rigorous quality control, and meeting the demand of our European clients - today we announce the opening of our testing lab in London. Read Now! Sequential Skin Debuts Sequential Bio Testing Solution Sequential Skin Ltd. announced the debut of Sequential Bio– an in-vivo microbiome testing solution for companies across beauty and personal care to better understand the effects of ingredients on the body's microbiome in real-world conditions. Read Now! ‘Maintaining the microbiome’: Biotech startup Sequential Skin debuts in vivo B2B testing service UK-Singapore headquartered biotech startup Sequential Skin has taken a solid stride into B2B microbiome testing with the debut of its end-to-end in vivo service for consumer care companies. Read Now!

Connect With Us At Conferences At Sequential, we believe in the power of personal connections and the exchange of ideas to foster innovation and growth. As we actively participate in various conferences and industry events, we invite you to be a part of these enriching experiences. Explore the opportunities to engage with our team, discover the latest industry trends, and strengthen the bonds that drive mutual success. Join us at conferences to connect, learn, and pave the way for future collaborations. Where we will be in 2024 16-18 April 2024 Paris, France 23-24 April 2024 Rotterdam, Netherlands 7-8 May, 2024 Singapore 4-5 September, 2024 Coventry, United Kingdom 12-13 November, 2024 Coventry, United Kingdom IN-COSMETICS GLOBAL This spring, we have the pleasure of returning to In-Cosmetics Global, where our Co-Founder and CEO will be giving a talk on the first day! Come speak with us at Booth 1W79! Global Engage Rotterdam We will be in attendance at this year's Global Engage, where our Co-Founder and CEO will be in attendance! Global Engage Singapore We will be in attendance at this year's Global Engage, where our Co-Founder and CSO will be in attendance! SCS Annual Conference We are excited to announce we will be first-timers at this year's SCS Annual Conference! SCS FORMULATE Come check out our booth (1012) at this year's SCS Formulate and speak to us about all things microbiome! Connect with us on Socials!

Clinical Assessments for More In-Depth Analysis When it comes to testing your personal care products, we offer add-ons to supplement your microbiome research efforts and facilitate your testing experience. It has become clear in recent years that differentiation is key when creating a formulation for the competitive market, however, differentiation can be incredibly straightforward when backed with the data and scientific evidence to support it. Not only will you differentiate your brand, you will also demonstrate your commitment to providing leading-edge and effective solutions for your customers’ personal care and skincare needs. Start Your Biophysical Study Today! The only way to understand how a product performs is by putting it to the test Hydration Measurement (Corneometry and TEWL) Gain a comprehensive understanding of your product's impact on moisture retention, skin hydration and overall skin barrier function. This data can guide the development of effective moisturizing formulations. Perception Questionnaire Uncovering how users experience and interact with products. These surveys offer valuable insights into subjective factors like texture, scent, and overall satisfaction ensuring that your scientific data is enriched. Elasticity Measurement (Elastometer) Unravel the effect your product has on the skin’s elasticity through the use of elastometers, allowing you to position your product within a firming category with demonstrated benefits for graceful aging. High-Resolution Imaging Use before and after images to provide visual evidence of a product’s impact on the skin’s appearance. These tangible comparisons offer brands the ability to objectively assess changes in the skin. Dermatologist Assessment Measure and quantify inflammatory disease, atopic dermatitis (through SCORAD), psoriasis (through PASI), comedogenicity, and other hallmarks of skin conditions, by our board-certified and in-house dermatologists. Skin pH Measurement Maintain the delicate balance of the skin's acid mantle with your product by measuring pH to ensure compatibility and minimise the risk of irritation for a gentle, biome supporting formulation. FAQ What is Sequential's testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. Why is it necessary to test the microbiome in vivo? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. What type of sequencing technology does Sequential use for analysis? We offer four types of sequencing techniques including qPCR with our Smart Probes™, 16S, ITS and Shotgun Metagenomics. Using next-generation sequencing of the collection of microorganisms found on the body, during product usage, Sequential investigates the microbial diversity, and particular microorganisms we know are important and play a role in a healthy microbiome. Does Sequential offer claims certification for tested products? We provide our clients with a certification to claim “Maintains the Microbiome” subject to in vivo testing results which can be used in communication efforts. Once your product is tested with our qPCR Smart Probes™ and has shown favourable results in supporting the microbiome, we can certify your product with our Maintains the Microbiome certification seal. We have ensured that our seal and certification are backed by quantifiable data and scientifically significant markers. The aim is to ensure our clients feel confident in making their claims and can communicate the true benefit of their microbiome formulations.

TARGETED SKIN PANEL Acne Targeted Panel 23 Smart Probes ™ Acne Panel Validated targets: Cutibacterium acnes acnes (subtype I) Cutibacterium acnes defendens (subtype II), Cutibacterium acnes elongatum (subtype III) Absolute Quantification End-to-end Service Qet a Quote Unlock the Secrets of Acne with Sequential's Cutting-Edge Microbiome Testing Why Microbiome Testing for Acne? Acne affects nearly 85% of people between the ages of 12 and 24, with millions worldwide continuing to struggle with breakouts into adulthood (American Academy of Dermatology). While many individuals turn to over-the-counter products in hopes of finding relief, the reality is that many of these formulations can exacerbate the problem. Without proper testing, products may contain ingredients that disrupt the delicate balance of the skin, leading to irritation, clogged pores, and even more severe acne. Acne isn’t just skin-deep — it’s driven by a delicate balance of microorganisms on the skin. As skincare companies race to meet demand, a lack of microbiome-focused testing means many products fail to address the root microbial causes of acne. Sequential is leading the way in microbiome testing for the industry. With a specialized focus on skin conditions, we have developed an innovative solution tailored to help you understand the root causes of acne at the microbial level. Our proprietary sequencing panel is designed specifically to offer in-depth analysis of acne-associated microbiota, giving you the tools to transform skincare solutions. Customized Analysis Tailored insights specific to acne-prone skin, allowing your R&D team to develop more personalized and effective products. Actionable Data Leverage detailed reports to guide formulation decisions and validate product efficacy with precision. Product Innovation New acne treatments or enhancing existing lines, our data helps you create targeted solutions with proven results. Precision Sequencing Target specific microbial communities associated with acne development and severity. Smart Probe s ™ Our dedicated team of scientists has developed a groundbreaking method for evaluating microbes through our Smart Probes™, a proprietary panel featuring 23 key microbes specifically identified as having the greatest impact on skin health. To further explore the intricate connection between acne and the skin microbiome, we employ qPCR technology. This cutting-edge technique allows us to precisely measure microbial populations on the skin, providing a clearer understanding of how imbalances in the microbiome can contribute to acne breakouts. By carefully analyzing how skincare products interact with both beneficial and acne-causing microbes, companies can create solutions that not only target acne symptoms but also support a healthier, balanced skin microbiome, promoting clearer and more resilient skin. Acne Panel Targets Cutibacterium acnes acnes (Subtype I) Cutibacterium acnes subtype I is a specific strain of the C. acnes bacterium commonly found within sebaceous (oil) glands. This bacterium plays a key role in maintaining skin health by breaking down sebum, and producing fatty acids that prevent harmful pathogens from colonizing. However, certain strains of subtype I are associated with inflammatory conditions like acne vulgaris. While typically harmless, its overgrowth or imbalance in the skin microbiome can trigger immune responses that lead to acne and other skin issues. Spittaels KJ, Ongena R, Zouboulis CC, Crabbé A, Coenye T. Cutibacterium acnes Phylotype I and II Strains Interact Differently With Human Skin Cells. Front Cell Infect Microbiol. 2020 Nov 16;10:575164. doi: 10.3389/fcimb.2020.575164. PMID: 33330124; PMCID: PMC7717938. Cutibacterium acnes defendens (Subtype II) Cutibacterium acnes subtype II is a strain of the C. acnes bacterium, distinct from subtype I, and is found on human skin, primarily in sebaceous areas. While it shares similarities with other subtypes in maintaining skin health by metabolizing sebum, subtype II is less commonly associated with acne development. It has been linked more to opportunistic infections and medical device-related infections rather than inflammatory acne. Subtype II is typically less inflammatory than subtype I and plays a different role in the skin's microbial balance. Cobian N, Garlet A, Hidalgo-Cantabrana C, Barrangou R. Comparative Genomic Analyses and CRISPR-Cas Characterization of Cutibacterium acnes Provide Insights Into Genetic Diversity and Typing Applications. Front Microbiol. 2021 Nov 3;12:758749. doi: 10.3389/fmicb.2021.758749. PMID: 34803983; PMCID: PMC8595920. Cutibacterium acnes elongatum (Subtype III) Cutibacterium acnes subtype III is a less common strain of the C. acnes bacterium, primarily found in deeper skin layers and associated more with opportunistic infections rather than acne. Unlike subtypes I and II, which are typically found on the skin's surface and sebaceous areas, subtype III is linked to post-surgical infections, particularly around medical implants, and is less involved in acne formation. It tends to have lower inflammatory potential, distinguishing it from other C. acnes subtypes in terms of both location and clinical relevance. Dagnelie MA, Khammari A, Dréno B, Corvec S. Cutibacterium acnes molecular typing: time to standardize the method. Clin Microbiol Infect. 2018 Nov;24(11):1149-1155. doi: 10.1016/j.cmi.2018.03.010. Epub 2018 Mar 12. PMID: 29544912. Industry Leader in Absolute Quantification Sequential’s Smart Probe ™ qPCR approach to microbiome analysis can resolve species and subspecies, giving statistically significant findings between skin conditions on in vivo human samples, compared to conventional sequencing approaches. Relevant Research Acne & The Skin Microbiome? Unveiling Nature's Acne Assassin: The Power of Essential Oils Benzoyl Peroxide & the Skin Microbiome Read More Articles

The secrets behind your skin microbiome On the surface of your skin sits an organic ecosystem made up from billions of good bacteria called the microbiome. It forms the first layer of defense for your skin against outside forces. In order for your skin microbiome to be healthy, it must be balanced. A balanced microbiome means healthy skin What affects your skin microbiome? Your environment The country you live in can have adverse effects on your skin microbiome, from pollution levels to UV exposure. Your skin care routine When it comes to skin care, not knowing what products to use can negatively impact your skin microbiome. Your physical wellbeing What you put in your body is as important as what you put on it. A healthy diet can affect your skin health. Your mental health When you aren’t well internally, it can be a struggle to look after yourself. It is imperative to be aware of your mental health. What is Sequential's testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. Why is it necessary to test the microbiome in vivo? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. What type of sequencing technology does Sequential use for analysis? We offer four types of sequencing techniques including qPCR with our Smart Probes™, 16S, ITS and Shotgun Metagenomics. Using next-generation sequencing of the collection of microorganisms found on the body, during product usage, Sequential investigates the microbial diversity, and particular microorganisms we know are important and play a role in a healthy microbiome. Does Sequential offer claims certification for tested products? We provide our clients with a certification to claim “Maintains the Microbiome” subject to in vivo testing results which can be used in communication efforts. Once your product is tested with our qPCR Smart Probes™ and has shown favourable results in supporting the microbiome, we can certify your product with our Maintains the Microbiome certification seal. We have ensured that our seal and certification are backed by quantifiable data and scientifically significant markers. The aim is to ensure our clients feel confident in making their claims and can communicate the true benefit of their microbiome formulations. Unearth the secrets of your skin microbiome We are skin experts We are a team of award-winning scientists with a mission to empower individuals to make better-informed decisions about their skin health. Our Story

TARGETED SKIN PANEL Atopic Dermatitis Targeted Panel 23 Smart Probes ™ Atopic Dermatitis Panel Validated targets: Staphylococcus aureus, Malassezia spp, Staphylococcus epidermidis Absolute Quantification End-to-end Service Qet a Quote Atopic Dermatitis Study with Sequential's Cutting-Edge Microbiome Testing Why Microbiome Testing for Atopic Dermatitis? Atopic dermatitis (AD), a chronic inflammatory skin condition, affects around 31.6 million people in the U.S., with 15-20% of children globally and 7.3% of U.S. adults experiencing the condition (National Eczema Association). AD often results from a combination of genetic predisposition and environmental triggers, such as irritants in cosmetic products. Disruptions to the skin’s microbiome play a significant role in the disease's development and severity. Imbalances in beneficial and harmful microbes can exacerbate AD, highlighting the importance of targeted treatments. In vivo testing for products aimed at managing AD is essential because it allows researchers to understand how formulations impact both the skin barrier and microbiome in real-world conditions. Properly tested products can help reduce irritation and avoid worsening symptoms, offering a science-backed approach to skincare for those with AD. Sequential is leading the way in microbiome testing for the industry. With a specialized focus on skin conditions, we have developed an innovative solution tailored to help you understand the root causes of AD at the microbial level. Our proprietary sequencing panel is designed specifically to offer in-depth analysis of AD-associated microbiota, giving you the tools to transform skincare solutions. Customized Analysis Tailored insights specific to AD-prone skin, allowing your R&D team to develop more personalized and effective products. Actionable Data Leverage detailed reports to guide formulation decisions and validate product efficacy with precision. Product Innovation New AD treatments or enhancing existing lines, our data helps you create targeted solutions with proven results. Precision Sequencing Target specific microbial communities associated with AD development and severity. Smart Probe s ™ Our dedicated team of scientists has developed a revolutionary method for evaluating microbes through our Smart Probes™. This proprietary panel includes 23 key microbes that we have specifically identified as having the most significant impact on skin health. To further understand the intricate relationship between atopic dermatitis (AD) and the skin microbiome, we use qPCR technology. This advanced technique allows us to precisely quantify microbial populations on the skin, providing deeper insights into how AD affects the microbiome. By closely monitoring how products interact with both beneficial and harmful microbes, companies can create solutions for AD but also restore a healthy balance to the skin’s ecosystem. Atopic Dermatitis Panel Targets Staphylococcus aureus This bacterium is frequently found in higher numbers on the skin of individuals with atopic dermatitis. It can exacerbate inflammation and contribute to skin barrier disruption. Malassezia spp This genus of yeast, which is part of the normal skin flora, can become overgrown in individuals with atopic dermatitis, potentially aggravating symptoms. Staphylococcus epidermidis While generally considered a commensal organism, imbalances in its population, along with other microbes, can influence the skin's health and contribute to atopic dermatitis symptoms. Industry Leader in Absolute Quantification Sequential’s Smart Probe ™ qPCR approach to microbiome analysis can resolve species and subspecies, giving statistically significant findings between skin conditions on in vivo human samples, compared to conventional sequencing approaches. Relevant Research Answers for Atopic Dermatitis and Allergies: What is the Role of the Skin Bacteriome? Understanding Atopic Dermatitis Topical Steroid Withdrawal & the Skin Microbiome Read More Articles

Simplify your Study Protocols with our Tailored Candidate Recruitment Highlight your specific requirements for clinical test subjects and we will take care of the entire candidate recruitment process for you, whether it is in-person or remote. This allows us to closely supervise and guarantee the quality of microbiome collection. 10,000+ Subject Database We offer candidate recruitment across a diverse pool of candidates to give better insights into how certain formulations work with individuals of different backgrounds. In Lab or Remote Testing The nature of our recruitment process is often linked to at-home testing, however, if you would prefer a controlled environment to test participants, we can arrange for testing to be conducted within our labs in Singapore, London and New York City. Simplified Recruitment Process As a global company, we pride ourselves in our reach and ensuring your study targets are met. We can recruit all the candidates required by the study regardless of geographical barriers. Longitudinal Studies Understanding the long-term impact of your formulation of personal care products is only possible with our in vivo solution which requires human participants to test the products on themselves. Why is a Human Approach Better when it Comes to Personal Care Product Testing? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. in vitro Lab Testing in vivo Human Testing Analyze select bacteria within a lab setting Narrow view of microbiome: Isolated from other bacteria Cannot extract meaningful conclusions on how the product will interact with its place of application Limited analysis: brief snapshot of how the product interacts with an isolated bacteria Analyze all bacteria within its natural context Broad view of microbiome: you can see interactions between bacteria Can extract meaningful conclusions on how the product will interact with its place of application Longitudinal analysis: evaluate the product over time and its impact on the microbiome Normal to Atopic Skin It’s crucial to test your product on individuals suffering through the concerns your active ingredients are targeting. This is why we believe in a fully personalized approach to candidate recruitment and human testing, bringing forward those individuals that your products are genuinely designed to help. FAQ What is Sequential's testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. Why is it necessary to test the microbiome in vivo? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. What type of sequencing technology does Sequential use for analysis? We offer four types of sequencing techniques including qPCR with our Smart Probes™, 16S, ITS and Shotgun Metagenomics. Using next-generation sequencing of the collection of microorganisms found on the body, during product usage, Sequential investigates the microbial diversity, and particular microorganisms we know are important and play a role in a healthy microbiome. Does Sequential offer claims certification for tested products? We provide our clients with a certification to claim “Maintains the Microbiome” subject to in vivo testing results which can be used in communication efforts. Once your product is tested with our qPCR Smart Probes™ and has shown favourable results in supporting the microbiome, we can certify your product with our Maintains the Microbiome certification seal. We have ensured that our seal and certification are backed by quantifiable data and scientifically significant markers. The aim is to ensure our clients feel confident in making their claims and can communicate the true benefit of their microbiome formulations.

TARGETED SKIN PANEL Rosacea Targeted Panel 23 Smart Probes ™ Rosacea Panel Validated targets: Demodex mites, Bacillus oleronius, Helicobacter pylori Absolute Quantification End-to-end Service Qet a Quote Unlock the Secrets of Rosacea with Sequential's Cutting-Edge Microbiome Testing Why Microbiome Testing for Rosacea? Rosacea is a chronic skin condition affecting an estimated 16 million Americans and millions more worldwide, primarily adults over 30 (National Rosacea Society). Characterized by redness, visible blood vessels, and inflammation, rosacea can significantly impact an individual’s quality of life. Research suggests that the skin microbiome plays a crucial role in the development and severity of rosacea. Specifically, imbalances in microbial populations, such as an overgrowth of Demodex mites or harmful bacteria, can exacerbate symptoms. In vivo testing of skincare products for rosacea is essential to ensure that formulations are compatible with the unique microbiome of rosacea-prone skin. Such testing allows researchers to observe real-world effects on microbial balance and inflammation, ensuring that products do not unintentionally worsen symptoms. Without this careful testing, products may disrupt the microbiome further, leading to increased redness, irritation, or flare-ups. Sequential is leading the way in microbiome testing for the industry. With a specialized focus on skin conditions, we have developed an innovative solution tailored to help you understand the root causes of rosacea at the microbial level. Our proprietary sequencing panel is designed specifically to offer in-depth analysis of rosacea-associated microbiota, giving you the tools to transform skincare solutions. Customized Analysis Tailored insights specific to rosacea-prone skin, allowing your R&D team to develop more personalized and effective products. Actionable Data Leverage detailed reports to guide formulation decisions and validate product efficacy with precision. Product Innovation New rosacea treatments or enhancing existing lines, our data helps you create targeted solutions with proven results. Precision Sequencing Target specific microbial communities associated with rosacea development and severity. Smart Probe s ™ Our dedicated team of scientists has developed a revolutionary method for evaluating microbes through our Smart Probes™, a proprietary panel that includes 23 key microbes specifically identified as having the most significant impact on skin health. To further understand the complex relationship between rosacea and the skin microbiome, we utilize qPCR technology. This advanced method allows us to accurately quantify microbial populations on the skin, offering deeper insights into how rosacea affects the balance of beneficial and harmful microbes. By closely monitoring how skincare products interact with these microbes, companies can develop solutions that not only target rosacea symptoms but also help restore a healthier, balanced skin microbiome, providing long-term relief for sufferers. Rosacea Panel Targets Demodex mites (Demodex folliculorum and Demodex brevis) These tiny mites are normally present on the skin but are often found in higher numbers on the skin of individuals with rosacea. Their presence is thought to trigger inflammatory responses. Forton FMN. The Pathogenic Role of Demodex Mites in Rosacea: A Potential Therapeutic Target Already in Erythematotelangiectatic Rosacea? Dermatol Ther (Heidelb). 2020 Dec;10(6):1229-1253. doi: 10.1007/s13555-020-00458-9. Epub 2020 Oct 23. PMID: 33095403; PMCID: PMC7649190. Kim HS. Microbiota in Rosacea. Am J Clin Dermatol. 2020 Sep;21(Suppl 1):25-35. doi: 10.1007/s40257-020-00546-8. PMID: 32914214; PMCID: PMC7584533. Bacillus oleronius This bacterium has been linked to rosacea, particularly in relation to the inflammatory response associated with the condition. It is often found in higher quantities on the skin of rosacea patients. Helicobacter pylori Although not a skin microbe per se, this bacterium, commonly associated with gastrointestinal issues, has been implicated in some studies as a potential contributor to rosacea flare-ups or exacerbations. Yang X. Relationship between Helicobacter pylori and Rosacea: review and discussion. BMC Infect Dis. 2018 Jul 11;18(1):318. doi: 10.1186/s12879-018-3232-4. PMID: 29996790; PMCID: PMC6042414. Industry Leader in Absolute Quantification Sequential’s Smart Probe ™ qPCR approach to microbiome analysis can resolve species and subspecies, giving statistically significant findings between skin conditions on in vivo human samples, compared to conventional sequencing approaches. Relevant Research How Does the Skin Microbiome Influence Rosacea? Unveiling the Microbial Puzzle Read More Articles