Acne is common skin disorder which suffered most by teenager in their puberty but adults have it too. Actually it's a normal skin process but when it is uncontrolled and become puss filled and have cysts under the skin (cystic acne) further more it can produces permanent scars. That's why some people with prone to acne have to know how to treat acne properly by their self or by help from the acne clinic or skin clinic. The causes of acne (believed) are heredity/genetic, hormonal change (in puberty,pregnancy and in birth control pills of woman), certain drugs and oily cosmetics.