Word: blackhead
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Dates: during 1960-1969
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Progesterone breaks down into androgens, Dr. Fisher pointed out, and these stimulate the production of sebum, the waxy substance secreted by the sebaceous glands of the upper trunk and head. These myriad, tiny glands are easily blocked by hardened sebum, which creates a blackhead. In its efforts to get rid of this plug, the body starts the inflammatory process, causing a pimple. Inside the pimple are blood and lymph fluids in which bacteria thrive, creating a pustule similar to a small boil. At the edges of big pustules, bacterial poisons kill skin cells and leave disfiguring scars...