Strip down to your natural state with ACID WASH. Designed to cleanse without removing oils or color, this rinse also softens hair, calms the scalp, and adds dramatic shine. Regular use strengthens hair. Dermstore has partnered with Flex to allow you to use your Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you can now use your HSA or FSA debit card to buy R+Co products with pre-tax dollars, resulting in net savings of 30-40%, depending on your tax bracket. Eligible for HSA/FSA with a letter of medical necessity at checkout. From dermatologist-recommended treatments to solutions for chronic skin conditions like acne, eczema, and rosacea, these products are both effective and eligible. | R+Co Lost Treasure Apple Cider Vinegar Cleansing Rinse, 6 oz | Dermstore