Lactic Acid comes in many different forms, and we are intentional with the forms we use in our formulations to bring you effective, yet gentle solutions. All of our products are formulated with Ammonium Lactate (a nod to our brand name!), which is a pH-balanced type of Lactic Acid that results in a gentle-r exfoliation than other forms. In addition to Ammonium Lactate, we use Sodium Lactate and Potassium Lactate in our proprietary blend of Lactic Acid, called Ultraplex, which is found only in AmLactin products.