What Causes Over Sweating Underarms?

hi, i am 31 year old male. with no major medical history. but i do work out and take fat burners and protein drinks etc often. my weight 65 kg and height 163cm. i had a chemical burn (while using a hair remover) and after it healed i noticed that my underarms are sweating excessively. i am at a loss as to what to do about it.