SPF
Lactic acid is a gentle alpha-hydroxy acid that helps promote the skin's natural exfoliation process—which aids in softening and smoothing the skin and improving its overall texture1. Additionally, lactic acid is one component of the skin's natural moisturizing factor, which is a blend of compounds naturally found in the skin that helps the it hold on to moisture2.
  1. Baumann, Leslie S. Cosmetic dermatology. McGraw-Hill Professional Publishing, 2009, page 105
  2. Baumann, Leslie S. Cosmetic dermatology. McGraw-Hill Professional Publishing, 2009, page 275-276