Keep blonde hair bright and strong with the No. 4-P Blonde Enhancer Toning Shampoo from Olaplex. Formulated for natural or color-treated blonde hair, this sulfate-free formula cleanses while the highly concentrated pigment formula allows for customizable toning levels that help neutralize brassiness and brighten blond hair. Key Benefits: Cleanses, hydrates and repairs hair Brightens and neutralizes brassiness in blonde hair Highly concentrated pigment allows customizable toning levels Strengthens fragile bonds Ideal for natural and color-treated 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 Olaplex 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. | Olaplex No. 4P Blonde Hair Hydrating and Brightening Purple Toning Shampoo, 250 ml | Dermstore