Acne in oily skin
Bacteria, which live in everyone's skin but generally mind their own business, feast on this oil, multiply, and cause the surrounding tissues to become inflamed.
If the inflammation is right near the surface, you get a pustule; if it's deeper, a papule (pimple); deeper still and it's a cyst. If the oil breaks though to the surface, the result is a " whitehead." If the oil becomes oxidized (that is, acted on by oxygen in the air), the oil changes from white to black, and the result is a "blackhead.
Acne (acne vulgaris, common acne) is not just a problem for teenagers; it can affect people from ages 10 through 40. It is not unusual for women, in particular, to develop acne in their mid- to late-20s, even if they have not had breakouts in years (or ever). On the positive side, those few individuals who have acne into their 40s may well grow out of it. Acne can appear on the skin as any of the following:
- congested pores ("comedones"),
- whiteheads,
- blackheads,
- pimples ("zits"),
- pustules, or
- cysts (deep pimples,boils). The pus in pustules and cysts is sterile and does not actually contain infectious bacteria.
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