Why is lactic acid the AHA of choice?
Firstly, new clinical research showed that lactic acid is superior to all other AHAs, including glycolic, in being able to signal the skin cells to increase HA deposition in the skin. Basically lactic acid does a better job than all other AHAs at moisturising the skin because it is natural to the human body. The process is similar to wound healing and triggers a natural response which gives outstanding results in skin moisturization levels. Lactic acid can also be oxidized by the skin to create pyruvic acid, an alpha-keto acid which is even more effective that AHA at skin exfoliation.
