Alpha-hydroxy acids such as lactic acid, mandelic acid, and glycolic acid (for example, Alpha Hydrox or Hydrox-C) are often used to treat acne. These products work by drying up whiteheads, blackheads, and pimples and causing the top layer of your skin to peel.

While these products are safe to use, they may cause tingling and a mild redness of the skin. Use them less often if you notice that your skin becomes very red or very dry.