Antibiotics can help by attacking the skin bacteria that accumulate in the comedones, which are a characteristic of severe acne. These bacteria turn the oil in the plugged pores into fatty acids that act as irritants. When enough oil collects, the blocked sebaceous gland ruptures the bacteria and fatty acids seeps into the adjacent skin. The result is irritation, inflammation, pimples and permanent scarring in severe cases.
Antibiotics (usually low doses of tetratcycline or erythromycin given orally or topically) help to control the inflammatory aspect of acne by blocking the growth of these bacteria.
Vitamins also help clear acne. A topical preparation made from vitamin A (tretinoin) may be useful in treating acne where simple conventional therapy is not enough. It can cause irritation if not carefully used. Another derivative, the prescription drug Roaccutane, may be useful in severe cystic acne but it is teratogenic – that is to say, it causes fatal deformities so it must not be used by women who are pregnant or not protected by contraception. Vitamin A in itself does not help to clear up acne.
How to remove acne scars?
Dermabrasion is one technique used to modify acne scars. The patient must be prepared, however, for a relatively prolonged period (usually three weeks) of recovery from side effects. The procedure involves stroking a high-speed rotary brush or abrasive across the anaesthetized skin to peel and level the outermost layers; this causes the skin to swell and curst over. The crust is eventually shed – usually within two weeks – as new skin begins to from underneath. The underlying skin is thinner and pinker and it may take several months for the skin to return to normal.
Dermabrasion does not completely remove all acne scars, but it does tend to make them less noticeable. Also, the procedure does not help all types of scars, nor does it help all scars to the same degree. Finally, there are a number of risks involved, including infection and changes in skin color. As a result, if you wish to have this treatment, you should proceed only after careful evaluation by a physician experienced in the use of the technique.

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