If it gets bad, be sure to take him to the doctor or dermatologist for help. My daughter had acne that didn't seem bad and she eventually got on tetracycline and other medications, but was still left with scars. She has had expensive laser treatment in her 30's. It is best to take no chances if they have sensitive skin. Sometimes I see adults with terrible acne and I want to tell them to go to the dermatologist because I know how much help it can be. $100 spent now is better than $7,000 later.