Best for all mature skin types except extremely sensitive skin. An effective conditioning exfoliant offering Retinol, Alpha Hydroxy-Lactic Acid, and Sea Algae. This traditional Vitamin A and AHA Serum is well suited to those looking for a deep exfoliation. Nourishing yet illuminating, this serum delivers outstanding hydrating benefits to skin that can become devitalized over time. Client Use: Apply in the evening two to three times per week following cleansing. It is recommended to be used at night only, after a thorough cleansing. You may experience stinging, redness, dryness, and flaking. Sensitivity to AHA’s or Retinols should be determined prior to using this product.