Dark coloration of the skin in your armpits is not a medical condition or some disease. Rather, small mistakes like using chemical-laden hair-removing creams, shaving, using alcohol-based deodorants and antiperspirants, poor ventilation in the underarm region and a buildup of dead skin cells have led to your skin getting dark.
METHOD 1: USE LEMON
Nothing can beat lemons when it comes to bleaching! A natural cleanser, lemons are 1 natural ingredient that help lighten your dark armpits fast. Moreover, they contain incredible antibacterial, antiseptic and acidic properties that help exfoliate the dead skin cells and thus lighten your skin.