I have been using glycolic acid for well over three decades for treating skin blotchiness, improving skin texture, treating active acne. And for these problems, glycolic acid can be a wonderful stand-alone treatment or valuable add-on with other therapies. However, unfortunately, it will do little for actually treating true acne scars.
Good luck.

Glycolic acid can be useful in treating acne, however, it is only mildly effective in treating acne scars.

Mark B. Taylor, MD