Clean your skin gently with a mild soap or cleanser twice a day — once in the morning and once at night. You should also gently clean the skin after heavy exercise. Avoid strong soaps and rough scrub pads. Harsh scrubbing of the skin may make acne worse. Wash your entire face from under the jaw to the hairline and rinse thoroughly. Remove make-up gently with a mild soap and water. Ask your doctor before using an astringent.
If you use hair sprays or gels, try to keep them away from your face, as they also can clog pores. If you have long hair that touches your face, be sure to wash it often enough to keep oil away. And if you have an after-school job that puts you in contact with oil — like in a fast-food restaurant or gas station, for example — be sure to wash your face well when you get home. It also can help to wash your face after you've been exercising.
No one factor causes acne. Acne occurs when sebaceous (oil) glands attached to the hair follicles are stimulated at the time of puberty or due to other hormonal changes. Sebum (oil) is a natural substance that lubricates and protects the skin. Associated with increased oil production is a change in the manner in which the skin cells mature, predisposing them to plug the follicular pore. The plug can appear as a whitehead if it is covered by a thin layer of skin, or if exposed to the air, the darker exposed portion of the plug is called a "blackhead." The plugged hair follicle gradually enlarges, producing a bump. As the follicle enlarges, the wall may rupture, allowing irritating substances and normal skin bacteria access into the deeper layers of the skin, ultimately producing inflammation. Inflammation near the skin's surface produces a pustule; deeper inflammation results in a papule (pimple); if the inflammation is deeper still, it forms a cyst.