QUALITY PRODUCTS PREPARED BY A PROFESSIONAL CHEMIST 30% Salicylic Acid Solution - 1 oz (30ml) PLEASE UNDERSTAND ALL SALICYLIC ACID OVER 5% CONCENTRATION MUST BE FORMULATED WITH ALCOHOL! YES IT WILL SMELL AND FEEL LIKE STRAIGHT ALCOHOL. IF YOU'RE NOT EXPERIENCED OR HAVE PRIOR KNOWLEDGE OF SALICYLIC ACID AND KNOW WHAT YOUR USING, PLEASE SAVE US BOTH TIME AND AGGRAVATION AND DO NOT PURCHASE. OUR APOLOGIZE TO OUR KNOWLEDGEABLE CUSTOMERS Includes Prep Pads, Application Cups, Detailed Instructions Salicylic acid is a substance derived from the bark of a willow tree. It is an organic phenol beta hydroxy acid. Salicylic acid is also found in unripe fruits, as it is part of their development process. This natural compound is used to treat a variety of skin problems from acne and calluses, to seborrhic dermatitis and psoriasis. Salicylic acid is probably most well-known for its acne fighting and exfoliation. Why is it such an effective treatment for acne? Acne is caused by a bacteria called propionibacterium acnes, and this bacteria thrives when the pH of your skin goes up. (Quick chemistry lesson, the pH scale goes from very acidic (0) to very basic (14) with 6/7 being neutral). However, certain studies seem to show that the growth of P. bacterium is inhibited when the pH of your skin becomes more basic. The pH of salicylic acid is, well, acidic, so it helps kill and defend against the p.bacteria! As a plus, the skin becomes more prone to damage and infection when it becomes more basic, so you can reduce your risk by making your skin more acidic. In general, your skin being acidic protects it from fungi and bacteria. Acne is formed when skin cells inside hair follicles shed too fast and clumps together, plugging up the follicle and causing a pimple. Salicylic acid also helps break down blackheads and whiteheads. It is also used to treat other skin disorders including dandruff, psoriasis, calluses, corns, warts, and more. THEORY ships in compliance with USPS regulations We will ship all qualifying items ORM-D when applicable. Return Policy Due to the health and safety concerns of our clients, we do not accept returns. It is not legal to accept returns for resale. However, if there is a problem with your purchase please contact us immediately and we will do our best to assist you! ALL THEORY SKIN CARE PRODUCTS ARE NOT FOR RESALE THEORY ships in compliance with USPS regulations We will ship all qualifying items ORM-D when applicable. Immediate Purchase Available. Contact Seller For Details. International buyer assume all risk if package is lost, confiscated by customs or not delivered for any reason. No refunds or credits will be issued. Buy at your own risk