BioKorium® uses an active high purity cosmetic grade glycolic acid incorporated into a pharmaceutical designed hydration lotion base which insures stability and proper activity. These lotions are compounded and calculated based on active or true percentages. Unlike others, our glycolic products are unaltered or neutralized in any way. Use as directed per licensed Aesthetician. We offer low percentage glycolic up to our higher percentage MD line. Glycolic Products need proper healing agents, this would be Skin Water® (Hydrate) and Waterscreen (Protect and Seal). Caution: As with all exfoliating agents, glycolic acid can be caustic and is to be used for external use only. Mild to moderate irritation may occur if used on sensitive, broken, or very dry skin. Avoid contact with eyes, eyelids, and mucous membranes. Discontinue use if skin sensitivity or persistent irritation is experienced. Keep Glycolic Acid products out of reach of children.