I've got 2 ladies in my class whose hair grew so much in less than 4 months. These ladies have East African origins, one of them, I call "P", was shoulder length in June and now in October her hair is bra-strap length
. The other one "S", had almost bra-strap length in June and now in October her hair is almost waist length
. This kind of hair growth makes me believe that, the rate of hair growth is based on genetics.

