A person can be as young as 12 years old to start Laser Hair Removal Treatment.
Most experts recommend waiting until the teen is through puberty and, if female, has begun her menstrual cycle. Females should be hormonally stable and should not have medical conditions.
As long as he or she is mature enough to fully understand the process, expectations and the importance of aftercare.
Most importantly, they must have parental/legal guardian permission.
Also, the young person must truly want this themselves and not as a result of pressure from family or friends.