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 ...

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 ...

Testosterone is key for beard growth because its byproduct, dihydrotestosterone (DHT), triggers hair follicles to grow longer and thicker hairs. For transgender men, the growth of facial hair ...