when does armpit hair start to grow
Ordered by those with the most votes. 1  Girls tend to go through menses before boys - armpit hair are one of the changes that happens with puberty so around 11 - 12 for girls 12 - 14 for boys. Boys generally start growing facial hair around the same time. Watching the little ones here grow up I have seen my boys and girls grow hair at 10 to 12 years old.