This Powerful Exfoliating Ingredient Brightens Skin and Fights Aging
“Glycolic acid has a smaller molecular size than the others, which allows it to better penetrate the top layers of the skin,” explains dermatologist Tara Rao, M.D., of Schweiger Dermatology Group in New York City. Improved penetration means it can work more effectively. Couple that with the additional skincare benefits it offers (more on those in a minute) and it’s no surprise that glycolic acid is one of the most popular AHAs—and skincare ingredients in general—out there.
Besides the excellent exfoliation, it also acts as a humectant—AKA a hydrating ingredient that works by attracting water to the skin. And that makes glycolic acid ideal for anyone who finds other acids to be too drying.
But here’s what really sets it apart from other acids. Besides acting on the surface of the skin, glycolic acid can also penetrate into the deeper layers, where it can help stimulate collagen production over time.
Source : Yahoo! Lifestyle – This Powerful Exfoliating Ingredient Brightens Skin and Fights Aging By, Melanie Rud