Skin Science and Health – May 29, 2026
Melanin Biology Explained: Why It's More Than Pigment—and How Eumelanin vs. Pheomelanin Affects Your UV Protection
Melanin is not just pigment or a tan—it's a sophisticated biological protection system. When UV radiation hits the skin, melanocytes produce melanin (via tyrosinase) to absorb and disperse UV before it damages DNA. Learn about eumelanin (brown-black, strong UV protection, equivalent to ~SPF 13 in darker tones) vs. pheomelanin (red-yellow, less protection), why tanning is cellular stress not health, and how all skin types still risk photoageing, pigmentation, melanoma, and collagen breakdown. Discover the science behind pigmentation as whole-body adaptive biology involving oxidative stress, inflammation, mitochondrial activity, and vitamin D balance.