What it is: A purple toning shampoo that strengthens, hydrates, and neutralizes brassiness while keeping hair hydrated from roots to ends. Hair Type: Fine, Medium, and Thick Hair Texture: Coily, Curly, Straight, and Wavy y Hair Concerns: - Brassiness - Color Safe - Color Fading Highlighted Ingredients: - Bis-Aminopropyl Diglycol Dimaleate: Rebuilds broken and weakened bonds. What Else You Need to Know: This highly concentrated, sulfate-free shampoo forms a rich lather to neutralize brassiness and boost brightness after one use. Suitable for all blonde, lightened, and gray hair?natural or stylist-created, root-to-tip or balayage?this non-drying formula can be rotated into any hair maintenance routine as needed for your best blonde yet. It?s scientifically proven to boost all blondes three times brighter compared to top purple shampoos. Ingredient Callouts: This product is vegan, gluten-free, and cruelty-free. What Else You Need to Know: This highly concentrated, sulfate-free shampoo forms a rich lather to neutralize brassiness and boost brightness after one use. Suitable for all blonde, lightened, and gray hair?natural or stylist-created, root-to-tip or balayage?this non-drying formula can be rotated into any hair maintenance routine as needed for your best blonde yet. It?s scientifically proven to boost all blondes three times brighter*. (*compared to top purple shampoos) OLAPLEX products are thoroughly tested in accordance with industry standards in-house and by independent third-party laboratories for safety and efficacy.