how long does it take for your hair to grow
Hair Growth. Hair generally grows an average of 1/2 inch per month, with growth generally predetermined by a person's genetic code, meaning that it can only grow so fast. In a year, hair usually grows about 6 inches.As a person ages, hair growth can slow due to cell division also slowing.Hair growth is a result of cell division when new hair cells form in the root and push the hair forward. The new hair is always added at the root as the older hair inches downward slowly.n a year, hair usually grows about 6 inches. As a person ages, hair growth can slow due to cell division also slowing. Hair growth is a result of cell division when new hair cells form in the root and push the hair forward. The new hair is always added at the root as the older hair inches downward slowly.