You: The Owner's Manual
By Dr. Michael Roizen and Dr. Mehmet Oz
Page 257

"One of the ways you can help make your skin younger is to trick your skin – to make it think it needs to produce new cells. Use Alpha Hydroxy Acids (AHA). It works by increasing cell turnover – removing dead cells, causing your skin to think it needs to rejuvenate and produce new cells, which has the effect of making skin look younger."

You: Being Beautiful
By Dr. Michael Roizen and Dr. Mehmet Oz
Page 58

"Alpha Hydroxy Acids (usually listed as glycolic acid) works as an exfoliant by peeling off the top layer of dead skin and hydrating with moisturizer. Alpha Hydroxy Acids have been around for about 20 years and make a marked improvement in skin quality. Fine lines and wrinkles lessen and your skin takes on a fresher-looking tone.

Don't Go to the Cosmetics Counter Without Me
By Paula Begoun
Page 82

Alpha Hydrox at-a-glance "A good selection of well-priced, effective AHA products utilizing glycolic acid; also excels with skin lightening and retinol products. Alpha Hydrox is the only company selling AHA products that is forthcoming about the AHA percentage and the pH level. Both are critical to ensuring you're getting an effective exfoliant.

Growing Younger
By Bridget Doherty and Julia VanTine
Page 83

Get Glowing with Glycolic Acid "Research suggests that at concentrations of 10 percent or higher, glycolic acid stimulates the formation of collagen and gives skin its youthful plumpness and strength. A few over-the-counter products, such as Alpha Hydrox do contain 10 percent glycolic acid. Derived from sugarcane, glycolic acid is the most common AHA in anti-aging products. It is also the most effective."