Hair grows about half an inch per month on average — roughly 6 inches per year. Growth rate can vary by factors like genetics, hormones, diet, stress, and age. Hair growth rate by age can be slower ...
Reviewed by Sara Harcharik Perkins, MD. Hair can be funny. Sometimes, it feels like you shaved your legs just yesterday, yet hair grows back the next day or with the chill of a breeze. On the other ...