There are no strict age limits for the procedure, but it is not recommended for children. During puberty, i.e. between the ages of 12 and 16, girls and boys are actively growing both hard and loose hair. Therefore, in order to remove their hair with the laser, they will have to undergo many more sessions with short pauses than adults. As for the elderly, their hair cover tends to lighten (turn grey), so the laser does not recognize them. The procedure becomes less effective.