Retinoids have been researched exhaustively and have been used as a component of skincare for decades. All retinoids are derivatives of vitamin A and this family includes retinol, retinal, retinaldehyde, tretinoin, adapalene, tazoratene . The most commonly used retinoid in cosmetics is retinol.
Though many of you are already aware of the different kinds of acids used in skincare products, there are a few among us who are not entirely sure of how to use them. Here I will attempt to give you a quick overview of those included in the Aha+Bha+Pha Serum.