Dermatologists Identify Friction and Regimen Habits as Primary Causes of Underarm Hyperpigmentation

By Christa Joanna Lee, Sara Coughlin · Allure · 2026-08-19

Allure reports that many consumers face underarm discoloration due to habitual skin friction, aggressive shaving, or reactions to standard antiperspirant formulas. Medical experts note that while over-the-counter exfoliants containing glycolic or lactic acids can improve skin ton

Allure reports that many consumers face underarm discoloration due to habitual skin friction, aggressive shaving, or reactions to standard antiperspirant formulas. Medical experts note that while over-the-counter exfoliants containing glycolic or lactic acids can improve skin ton