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Clinical Trial
Comparative Study
Journal Article
Multicenter Study
Randomized Controlled Trial
The treatment of melasma. 20% azelaic acid versus 4% hydroquinone cream.
International Journal of Dermatology 1991 December
The efficacy of 20% azelaic acid cream and 4% hydroquinone cream, both used in conjunction with a broad-spectrum sunscreen, against melasma was investigated in a 24-week, double-blind study with 329 women. Over the treatment period the azelaic acid cream yielded 65% good or excellent results; no significant treatment differences were observed with regard to overall rating, reduction in lesion size, and pigmentary intensity. Severe side effects such as allergic sensitization or exogenous ochronosis were not observed with azelaic acid.
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