The Vandyke Aha Pha Bha 32% serum is a powerful exfoliating serum that uses a blend of alpha hydroxy acids (AHAs), beta hydroxy acids (BHAs), and polyhydroxy acids (PHAs) to remove dead skin cells, unclog pores, and improve skin texture. This serum is suitable for all skin types, including sensitive skin. It is gentle enough to use daily, but powerful enough to deliver visible results in just 10 minutes.