Details of Ingredient, Layering & Routine 👇. Lactic Acid belongs to the family of AHA these are alpha hydroxy acids, these are water soluble chemical exfoliants that are gentle help exfoliate skin. Lactic Acid Serum or in Toner form is recommended for people with normal, dry or dry combination skin types. Other forms of AHA’s include Glycolic acid suitable for oily skin or skin that has hyperpigmentation & msndelic acid which is great for sensitive skin. What you need to know and this is import