how many cm can a hair grow in 6 months?
Most Helpful Guy
On average, hairs grows about 1.25cm per month. After 6 months it would be 7.5cm longer.1
Most Helpful Girl
Google is your friend...0
I think depends on the person. My hair grows extremely fast. It'll probably be 3-4 whole inches longer in 6 months.
a person's hair normally grows up to 6 inches a year so its half an inch a month thus 3 inches for 6 months