What? A lotion, cream or liquid applied to the skin with the aim of "loosening the dead skin cells" and giving the skin a beautiful and healthy glow.
Action? In a chemical (acid) peeling, the dead skin cells are as it were "loosened" by the acid present. The two best-known groups of acid peeling that you can do yourself at home, work on the basis of hydroxy acids. And these are:
(1) Alpha Hydroxy Acids (AHAs) or fruit acids; including glycolic acid, apple and lactic acid - more suitable for dry or normal skin
(2) and Beta Hydroxy Acids (BHAs); such as salicylic acid - more suitable for oily skin. A chemical peel, unlike an exfoliator, will only act on the top layer of the skin and is therefore less aggressive to the skin.
A prerequisite for good peeling effectiveness is a sufficiently high concentration and a correct pH. For glycolic acid a concentration of 8% is required to be effective, while for salicylic acid a concentration of 1-2% is sufficient. The optimum pH of an exfoliant is between 3 and 4. If the pH is too high, the active acid is neutralised and ineffective.