Dental General 0be167b4 Topical azelaic acid is used in – A Hyperpigmentary disorders B Dermatophyte infections C Vitiligo D Mixed infections High-Yield Explanation Azelaic acid is a depigmenting agent. Other depigmenting agents are hydroquinone, retinoic acid, kozic acid, glycolic acid, monobenzyl ether of hydroquinone.