Nov 6, 2025 · Explore the genetics, evolution, and health factors behind fair skin. Learn why it's not tied to a single ethnicity, but rather a complex trait influenced by geography and UV radiation. Researchers have identified that other genes also contribute to pigmentation, which is why fair skin shows up across a range of hair and eye colors, not just in redheads. Fair skin is often regarded as a beauty ideal in many parts of the world. These findings reveal how … The link between blonde hair and fair skin is a biological reality: the same genetic switch dictates a heightened susceptibility to sun damage. This profile makes the skin less resilient to environmental … Dec 19, 2025 · This study investigated the genetic basis of constitutive skin pigmentation using the Individual Typology Angle (ITA), an objective colorimetric measure. 🔍 TL;DR – Is Skin Pigmentation Polygenic? Skin pigmentation is one of the most polygenic traits in humans, meaning it’s controlled by dozens (or even hundreds) of genes, not just one.