Glycolic acid one of the most tried and true. It is a type of alpha hydroxy acid (AHA) that, like other ingredients in the category, can act as a water-binding agent and, when properly formulated and used in concentrations of 5% or greater, as an exfoliant. While there are several other types of AHA, glycolic acid is by far the one with the most research backing its effectiveness.
- The most-researched AHA (alpha hydroxy acid)
- Helps renew the skin’s surface and visibly improves signs of aging
- Increases the skin’s hydration
- May protect skin from UV damage