![]() ![]() correct discoloration from scars and age spots.Because of this, most over-the-counter (OTC) AHAs contain either glycolic or lactic acid.ĪHAs are primarily used to exfoliate. These two AHAs are also less likely to cause irritation. However, out of all the AHAs available, glycolic and lactic acids are the most promising and well researched. Research on the uses and efficacy of AHAs is extensive. ![]()
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