Assessing the efficacy and safety profiles of 0.025% tretinoin in treating axillary hyperpigmentation with acanthosis nigricans: a randomized double-blinded study.

Acanthosis nigricans (AN) is a dermatological condition, marked by hyperpigmentation and skin thickening, frequently affecting body folds like the axillae. Treatment options for axillary hyperpigmentation remain underexplored. This study evaluated the efficacy of 0.