The biology of pigment loss and what current research says about why we go grey.
Science
Every strand of pigmented hair you grow is the work of a small team of cells called melanocytes, nestled inside the bulb of each follicle. They produce melanin — the same pigment that colours your skin — and inject it into the keratin as the hair shaft is built. When melanocytes slow
Science
Hair colour comes from melanocytes, the cells in our follicles that produce pigment. As we age, these cells gradually slow down — and eventually stop — producing the melanin that gives hair its colour. Genetics set most of the timing. If your parents went grey early, you probably will too. But emerging