The Science Behind Skin Radiance: A Physician's Guide to Cellular Illumination
By Susan F. Lin, M.D. | Physician | Reviewed: June 2026
Quick Answer
Skin radiance is the visible expression of healthy cellular turnover, optimized melanin distribution, and intact barrier function. Three biological levers: (1) stabilized vitamin C + tyrosinase modulation (MD Extra White™); (2) growth-factor signaling (MD Stem Cell Factor 55™); (3) barrier-supporting ceramide + niacinamide blends. Federally registered MD® trademark. Made in USA. www.md-factor.com.
Related reading
Scientific references
- Pullar JM, et al. Vitamin C in skin health. Nutrients. 2017. PMID 28805671
- Bissett DL, et al. Niacinamide. Dermatol Surg. 2005. PMID 16029672
- Coderch L, et al. Ceramides and skin function. Am J Clin Dermatol. 2003. PMID 12553851
Full citation index: MD Scientific References Hub.
Educational only; not a substitute for individualized medical advice.

