HSA | FSA CARDS ARE NOW ACCEPTED

Last reviewed: May 12, 2026 Last updated: May 12, 2026

Written by: Jay Hastings , CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

How MC1R Affects Skin Aging and What You Can Do About It

Skin aging is driven by both genes and the environment. One important genetic player is MC1R, a gene that helps control how much eumelanin your skin produces. Eumelanin is the darker pigment that absorbs and scatters ultraviolet radiation and reduces oxidative damage. Variations in MC1R can lower eumelanin levels and make skin more vulnerable to sun-induced aging. Regardless of your MC1R status, everyday choices — like sun protection, antioxidant-rich nutrition, and avoiding smoking — have a large influence on how skin ages.

Why MC1R Matters

The MC1R gene influences pigment production in melanocytes. When eumelanin production is reduced, skin has less natural defense against UV radiation. UV exposure drives oxidative stress and activates enzymes called matrix metalloproteinases (MMPs), which break down collagen and elastin. Over time this leads to wrinkles, loss of elasticity, uneven texture, and age spots. Knowing your MC1R genotype can help you tailor prevention and self-care strategies to reduce photoaging risk.

Everyday Habits That Support Skin Resilience

  • Daily broad-spectrum sunscreen with SPF 30 or higher, reapplied every two hours when in direct sun
  • Physical sun protection: hats, sunglasses, long sleeves, and seeking shade during peak UV hours
  • Quit smoking and avoid secondhand smoke, which accelerates collagen breakdown
  • Limit exposure to air pollution and aggressively cleanse skin after high pollution exposure
  • Maintain regular sleep, stress management, and exercise to support skin repair processes

Nutrition and Supplements to Consider

Antioxidants neutralize free radicals generated by UV exposure and pollution. A diet rich in colorful fruits and vegetables provides vitamin C, polyphenols, and carotenoids that support collagen synthesis and reduce oxidative damage. Consider these targeted options:

  • Vitamin C: supports collagen production and helps protect against oxidative damage
  • Astaxanthin: a potent carotenoid antioxidant that can support skin elasticity and reduce photoaging signs
  • Green tea extract (catechins): helps reduce oxidative stress and inflammation after UV exposure
  • Collagen peptides: may support skin structure and hydration when used consistently
  • Vitamin E and other fat-soluble antioxidants: support membrane integrity and work synergistically with vitamin C

Talk with your healthcare provider before starting any new supplement, especially if you take medications or have health conditions.

Genetic Interpretation: MC1R rs1805007

2 effect alleles — TT (higher photoaging risk)

If your genotype is TT at rs1805007, you carry two copies of the effect allele. This genotype is associated with increased vulnerability to photoaging. Reduced eumelanin production means less natural protection from UV rays, so UV exposure more readily generates oxidative stress and activates MMPs that break down collagen. Over time this often leads to more pronounced wrinkling, uneven pigmentation, and age spots compared with people who have normal MC1R function.

Practical steps:

  • Prioritize strict sun protection: daily broad-spectrum sunscreen SPF 30+, reapply regularly, and use sun-protective clothing
  • Use topical antioxidants (for example vitamin C serums) daily to neutralize free radicals
  • Consider supplements such as astaxanthin and green tea extract after consulting your healthcare provider
  • Introduce collagen peptides and support nutrients like vitamin C and zinc to assist collagen synthesis
  • Avoid tanning beds and intentional tanning; seek shade and avoid peak-UV hours
  • Stop smoking and reduce pollution exposure when possible
  • Schedule regular skin checks with a dermatologist to monitor for photoaging changes and skin lesions
1 effect allele — CT (likely increased photoaging risk)

If your genotype is CT at rs1805007, you carry one copy of the effect allele. This genotype is associated with a likely increased risk of photoaging compared with individuals without the effect allele. Eumelanin production may be moderately reduced, so your skin may be somewhat less protected from UV damage and more prone to oxidative stress-driven collagen degradation.

Practical steps:

  • Make daily sunscreen use a habit and use physical barriers where practical
  • Build an antioxidant-rich diet with plenty of fruits and vegetables
  • Consider topical antioxidants and lifestyle supplements like astaxanthin and green tea extract with provider guidance
  • Use collagen-supporting nutrients and consider collagen peptides for skin structure support
  • Avoid smoking and reduce time spent in heavy pollution environments
  • Practice routine skin monitoring and visit a dermatologist as needed
0 effect alleles — CC (typical skin aging risk)

If your genotype is CC at rs1805007, you carry two copies of the non-effect allele and your MC1R function is expected to be typical. Your melanocytes should produce adequate eumelanin, giving standard natural protection against UV-related damage compared with those who carry effect alleles. That said, environmental factors still drive most of the variation in skin aging, so prevention is important even with typical MC1R function.

Practical steps:

  • Follow routine sun protection: daily broad-spectrum sunscreen, physical protection, and shade-seeking
  • Eat a diet high in antioxidants and maintain hydration
  • Consider collagen peptides and antioxidant supplements if desired and after discussing with your healthcare provider
  • Do not smoke and take measures to limit pollution exposure
  • Monitor skin for changes and see a dermatologist for prevention and treatment options as needed

Tracking Progress and When to See a Professional

Keep a simple routine and photograph your skin under consistent lighting to track changes over months. If you notice rapid increases in wrinkling, new or changing pigmented spots, persistent redness, or suspicious lesions, schedule a dermatology visit. A dermatologist can recommend treatments such as topical retinoids, professional-level antioxidants, in-office procedures, and targeted therapies to address photoaging and protect long-term skin health.

Important Note

PlexusDx provides genetic information to help you understand predispositions and prevention strategies. PlexusDx does not provide medical advice. Talk with your healthcare provider or a licensed dermatologist before making medical decisions, starting supplements, or beginning new treatments.

If this genetic variant is present in your PlexusDx results, the following tests and reports are commonly used to explore it further:

🧬 Genetic Tests:

🧪 Blood Tests:

📄 Genetic Report:

Frequently Asked Questions About SKIN AGING and MC1R rs1805007

How does the MC1R rs1805007 variant affect skin aging?

The MC1R gene helps regulate eumelanin production. Variations like MC1R rs1805007 can be associated with reduced eumelanin, which may increase vulnerability to UV-induced oxidative stress. When UV damage increases, it can activate matrix metalloproteinases (MMPs) that break down collagen and elastin, contributing over time to wrinkles, uneven pigmentation, and age spots. Your genotype can help you gauge photoaging risk and tailor prevention.

What are the practical differences for rs1805007 genotypes TT, CT, and CC?

For MC1R rs1805007: TT (2 effect alleles) is linked to higher photoaging risk due to greater eumelanin vulnerability to UV damage; CT (1 effect allele) suggests likely increased photoaging risk with moderate reductions in natural UV defense; and CC (0 effect alleles) is associated with typical MC1R function and a more typical baseline risk. Regardless of genotype, environmental factors like sun exposure, smoking, and pollution still strongly influence skin aging.

What skin-protection routine and nutrition help most if I have an effect allele for rs1805007?

Daily broad-spectrum sunscreen (SPF 30+), reapplying every two hours in direct sun, plus physical sun barriers (hats, long sleeves, shade) are key. Support skin resilience by quitting smoking/avoiding secondhand smoke, limiting pollution exposure, and cleansing after high pollution. For nutrition, prioritize antioxidant-rich foods (vitamin C, polyphenols, carotenoids) and consider options mentioned in the source such as vitamin C, astaxanthin, green tea extract (catechins), and collagen peptides—after discussing with a healthcare provider before starting supplements.

What tests can help me learn more about SKIN AGING and MC1R rs1805007?

The Longevity and Healthy Aging Genetic Test delivers over 200 genetic insights related to cellular repair, inflammation balance, metabolism, cardiometabolic health, and aging pathways. The Healthy Aging Genetic Report translates your results into personalized, actionable guidance. Your healthcare provider can also recommend targeted blood tests based on your specific pathway results and health history to complement your genetic insights with current biomarker data.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.