One thing we usually associate with teenage skin is spots and these can be caused by a number of things but one thing that can definitely help is making sure the skin is clean. Many products can go too far and overly strip the skin causing further damage and in some cases increased sebum (oil) production. A good cleanser will keep the skin clean without taking away too much oil or messing with the natural balance of the bacteria on the skin. A good cleanser is important because it will help to keep the pores clear from oil and dirt therefore helping to prevent spots and blackheads. If your teenager has acne you will need more than a cleanser.
OK part 2. I asked 