Lactic Acid
In addition to exfoliation, lactic acid is known for its moisturising properties.
Lactic acid is a natural humectant (water ‘magnet’) that draws and holds water in the upper layers of the skin. Most AHAs can increase the skin’s ability to trap water due to an increased production of natural skin moisturisers (hyaluronic acid), but lactic acid’s additional humectant properties make it ideal for treating dry skin. Lactic acid is ideal for those with slightly sensitive, dry, or allergy-prone skin. It’s larger molecular size makes it less irritating than glycolic acid as Lactic acid is naturally occurring in the human body and unlikely to cause an allergic reaction.