When used in high concentrations, they are best applied by a professional at intervals of three to six weeks. This is known as a series of acid peels. The alpha hydroxyacid used most commonly for peels is gylocic acid. Unlike other chemical peels, alpha hydroxyacids are not toxic to the skin. It is OK to use the alpha hydroxyacid in the morning if you prefer.
Men can use it as an after shave.
Wait 15 minutes before applying make-up or sunscreen over top of the alpha hydroxyacid. When using alpha hydroxyacid, apply to all of the skin in the area, not just to the spots you want to treat. This will treat microscopic lesions. When you put alpha hydroxyacid on your skin, it will burn for a few minutes. This is normal.