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azelaic acid

Component of grains such as wheat, rye, and barley, azelaic acid is effective for a number of skin concerns when applied topically, including skin brightening.

Azelaic acid is also an antioxidant, and has pronounced skin-soothing effects.

References for this information:

Journal of Cosmetic Dermatology, September 2016, issue 3, pages 269-282

Skin Therapy Letter, January 2016, issue 1, pages 1-7

Cutis, January 2016, issue 1, pages E9-E11

Journal of Drugs in Dermatology, September 2015, issue 9, pages 964-968

See hydroquinone

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