Four main factors cause acne: Excess oil production Hair follicles clogged by oil and dead skin cells Bacteria Excess activity of a type of hormone androgens Acne typically appears on your face, forehead, chest, upper back and shoulders because these areas of skin have the most oil sebaceous glands. Hair follicles are connected to oil glands. The follicle wall may bulge and produce a whitehead. Or the plug may be open to the surface and darken, causing a blackhead. A blackhead may look like dirt stuck in pores.
Pore-clogging cosmetics can combine with your natural skin oil to cause breakouts called acne cosmetica. After a long day, makeup, oil and dirt build up — a triple threat that easily clogs pores, traps acne-causing bacteria and results in breakouts. Look for noncomedogenic products and wash your face thoroughly — and gently — every night. Traveling Ever wonder why you come home from a vacation and your skin looks like the surface of the moon? The change of environment — humidity, weather or even water minerals, fluoride or other elements — can trigger acne.
Adult acne Adult acne: This year-old woman has had acne for years and gets the typical deep, inflamed pimples and cysts common in adult acne. Why it happens and what you can do for it Acne can be particularly frustrating for adults. A treatment that worked so well during our teen years can be useless — or make acne worse. If this happens, you may wonder whether those blemishes really are acne.
Complications Acne is caused when tiny holes in the skin, known as hair follicles, become blocked. Sebaceous glands are tiny glands found near the surface of your skin. The glands are attached to hair follicles, which are small holes in your skin that an individual hair grows out of. Sebaceous glands lubricate the hair and the skin to stop it drying out.