But before using it, you need to know the concentration and how frequently you can use it. Otherwise, it can lead to skin irritation, redness, or peeling. It is a type of alpha hydroxy acid, which is ...
Oily and acne-prone types should opt for foaming or gel cleansers to wash away excess ... glycolic acid, or alpha hydroxy acids, Gold says. Those will remove extra oil, debris, and dirt buildup ...