Your hair, like your taste in music and comfort level with social media, can give away your age. Hair changes with age just like the rest of your body. “Hair follicles get smaller, sebum production declines, and some people lose pigment cells and go gray,” says Francesca Fusco, MD, assistant clinical professor of dermatology at Icahn School of Medicine at Mount Sinai in New York City.
As hormones change, the hair sheds more and grows back more slowly, causing it to thin, says David Kingsley, PhD, president of the World Trichology Society. In addition, hormones trigger a reduction in sebum production…