Most cleansers and soaps are alkaline. They irritate the skin and partially neutralize the action of Glycolic Acid (AHA). Pro-Derm™ Gentle Cleanser, with an optimal acid pH of 4,5, maintains the skin’s integrity and is specially formulated to maximize the results of all Pro-Derm™ products. It contains 40% Aloe barbadensis extract, allantoin and is enriched with Lavender essential oil. For all skin types.