Evidence-Based Skin Care

Evidence-Based Skin Care: What You Really Need to Know

When it comes to skin care, the internet is flooded with advice — some helpful, much of it anecdotal. At Earlam and Christopher, we believe your skin deserves better than guesswork. That’s why our approach, including our new light therapy photobiomodulation aesthetic treatments, is grounded in peer-reviewed research and tailored to your individual needs.

1. The Foundations of Healthy Skin

Good skin care starts with an understanding of the science behind the skin barrier.

• Cleansing: Over-cleansing or using harsh surfactants can damage the stratum corneum and increase transepidermal water loss (TEWL), making skin more prone to irritation (Ananthapadmanabhan et al., 2004, Dermatologic Therapy).
• Moisturising: Ingredients like ceramides, glycerin, and hyaluronic acid have been shown to improve skin barrier function and hydration (Rawlings & Harding, 2004, International Journal of Cosmetic Science).
• Sun Protection: Daily use of broad-spectrum SPF significantly reduces the risk of photoageing and skin cancer (Green et al., 2011, Journal of Clinical Oncology).

Key takeaway: Healthy skin begins with barrier protection, hydration, and UV defence — the three pillars that no treatment should replace.

 

2. Nutrition, Lifestyle and Skin Health

A balanced diet rich in antioxidants, omega-3 fatty acids, and polyphenols supports skin resilience. For example:

• Omega-3 fatty acids help modulate inflammatory responses in the skin (Pilkington et al., 2011, Journal of Lipid Research).
• Antioxidants such as vitamin C and E reduce oxidative stress that accelerates collagen breakdown (Pullar et al., 2017, Nutrients).
• Sleep: Poor sleep quality has been associated with increased signs of skin ageing and impaired barrier recovery (Oyetakin-White et al., 2015, Clinical and Experimental Dermatology).

 

3. Evidence-Based Active Ingredients

When you hear about “miracle” serums, look for these evidence-backed actives:

• Vitamin C: A potent antioxidant, vitamin C helps protect the skin from damage caused by free radicals and can also brighten the skin and promote collagen production (Al-Niaimi F, Chiang NYZ. Topical Vitamin C and the Skin J Clin Aesthet Dermatol. 2017)
• Peptides: Short chains of amino acids that signal the skin to produce more collagen and elastin, helping to restore youthful elasticity (Pintea A, et al. Peptides: Emerging Candidates for the Prevention and Treatment of Skin Senescence: A Review. Biomolecules. 2025)
• Niacinamide: Improves skin elasticity, enhances barrier function, and evens skin tone (Bissett et al., 2005, Dermatologic Surgery).
• Alpha Hydroxy Acids (AHAs): Promote exfoliation and improve texture (Ditre et al., 1996, Journal of the American Academy of Dermatology).
• Retinoids: Increase collagen production and reduce fine lines (Kafi et al., 2007, Archives of Dermatology). BUT topical retinoids have also been proven to be toxic to meibomian glands in your eyelids which can exacerbate dry eye disease. (Ng A, et al. Impact of Eye Cosmetics on the Eye, Adnexa, and Ocular Surface. Eye Contact Lens. 2016).

 

4. Photobiomodulation (Light Therapy) for Skin Health

We are proud to introduce light therapy photobiomodulation at Earlam and Christopher — a non-invasive, clinically validated treatment that uses specific wavelengths of light to stimulate skin repair, reduce inflammation, and promote collagen synthesis.

What the research shows:

• Collagen Stimulation: Red and near-infrared light (600–900nm) can upregulate fibroblast activity, enhancing collagen and elastin production (Avci et al., 2013, Seminars in Cutaneous Medicine and Surgery).
• Wound Healing and Inflammation: Photobiomodulation has been shown to accelerate healing and reduce inflammatory cytokines (Hamblin, 2017, BMC Complementary and Alternative Medicine).
• Skin Rejuvenation: Randomised controlled trials have demonstrated improvements in skin smoothness, elasticity, and hydration following a course of treatments (Barolet et al., 2009, Journal of Cosmetic and Laser Therapy).

“Photobiomodulation is not about masking imperfections; it’s about working with your skin’s own biology to repair, restore, and protect,” says Sarah Farrant, Optometrist and Clinical Director at Earlam and Christopher.

 

Why our clinic is different:

Our treatments are protocol-driven, using clinically studied wavelengths and doses, and are delivered by trained practitioners. This ensures both efficacy and safety — with results that are reproducible and measurable, not anecdotal.

 

5. Integrating Light Therapy into a Skin Health Plan

Photobiomodulation works best as part of a holistic, evidence-based skin health strategy:

1. Daily protection: SPF, antioxidant serums, barrier-supportive moisturisers.
2. Targeted actives: hyaluronic acid, vitamin C, niacinamide as appropriate.
3. Lifestyle alignment: Nutrition, sleep, and stress management.
4. Periodic in-clinic treatments: Light therapy to stimulate repair and regeneration.

 

6. The Bottom Line

Skin health is science. By combining research-proven daily care with clinically validated in-clinic treatments like photobiomodulation, you can address the causes of skin ageing and damage — not just the symptoms.

At Earlam and Christopher, our mission is simple: help your skin work at its best with safe, effective, and evidence-driven care.

 

References:

• Ananthapadmanabhan KP, Moore DJ, Subramanyan K, Misra M, Meyer F. Cleansing without compromise: the impact of cleansers on the skin barrier and the technology of mild cleansing. Dermatol Ther. 2004;17 Suppl 1:16-25.
• Rawlings AV, Harding CR. Moisturization and skin barrier function. Int J Cosmet Sci. 2004;26(1):19-30.
• Green AC et al. Reduced melanoma after regular sunscreen use: randomized trial follow-up. J Clin Oncol. 2011;29(3):257–263.
• Pilkington SM, et al. Omega-3 polyunsaturated fatty acids: photoprotective macronutrients. J Lipid Res. 2011;52(3):439-452.
• Pullar JM, Carr AC, Vissers MC. The roles of vitamin C in skin health. Nutrients. 2017;9(8):866.
• Oyetakin-White P, et al. Does poor sleep quality affect skin ageing? Clin Exp Dermatol. 2015;40(1):17-22.
• Kafi R, et al. Improvement of naturally aged skin with vitamin A (retinol). Arch Dermatol. 2007;143(5):606-612.
• Bissett DL, et al. Topical niacinamide reduces yellowing, wrinkling, red blotchiness, and hyperpigmented spots. Dermatol Surg. 2005;31(7 Pt 2):860-865.
• Ditre CM, et al. Effects of alpha hydroxy acids on photoaged skin. J Am Acad Dermatol. 1996;34(2 Pt 1):187-195.
• Avci P, et al. Low-level laser (light) therapy (photobiomodulation) in skin: stimulating, healing, restoring. Semin Cutan Med Surg. 2013;32(1):41-52.
• Hamblin MR. Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. BMC Complement Altern Med. 2017;17(1):1-13.
• Barolet D, et al. Light-emitting diode (LED) photoprevention: reduced erythema, sunburn cells, and matrix metalloproteinase-1 expression after ultraviolet irradiation. J Cosmet Laser Ther. 2009;11(2):86-90.