In some of the individuals, acne heals with black pigmentation known as acne marks. They usually takes time to disappear. Duration of the marks to disappear depends upon the depth of the pigmentation. If the pigmentation is associated with acne, azelaic acid and adapalene are commonly used. Where as for pigmentation alone, skin lightning creams containing hydroquinone and arbutin are used .Chemical peeling like glycolic acid peeling also help to reduce the pigmentation. Glycolic acid 20-35%. is used It is well tolerated and does not produce systemic toxicity. It is an effective peeling agent even when used in lower concentrations and has a long shelf life.
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