So I asked a dermatologist about why he's able to grow a beard and I'm not. Dr. Jennifer Chwalek: It's based on genetics as well as hormones. Some men, you know, have more hair follicles ...

“Men’s beards undergo several changes over ... Like the hair on your head, beard hair often turns gray or white with age, she said. It’s due to the depletion of melanocyte stem cells in ...