The Acne Practice video(intro)

Contrary to what you may have heard, acne is not caused by dirty skin, eating chocolate, or drinking lots of soda. Acne is caused by overactive oil glands in the skin and an accumulation of oil, dead skin cells, and bacteria, which leads to inflammation in pores. Oil glands become stimulated when hormones become active during puberty, which is why people are likely to get acne in their teens. Because the tendency to develop acne is partly genetic, if other people in your family had (or have) acne, you may be more likely to develop it too.