...At the onset of puberty, the high levels of androgens; testosterone (dehydrotestosterone), androstenedione and progesterone stimulate an increase in the turn over of the cells lining the surface of the skin which blocks the passage for sebum from the sebaceous glands, leading accumulation, some chronic inflammation and subsequent infection with a bacteria named after the disorder, Propionibacterium acnes, a normal colony of the skin....»
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«...Another popular acne treatment is Retin-A. Tretinoin, or Retin-A, first became popular in the 1980's. This topical treatment is a derivative of vitamin A and is best used to treat blackheads and whitehead type acne. Retin-A works to remove whatever is clogging the pore and then also will prevent new whiteheads or blackheads from forming. In recent years, this chemical has also been found to improve wrinkles and is being used by those who wish to look younger....»
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