This bond-repairing shampoo uses Olaplex’s patented technology with their hero formula Bis-Aminopropyl Diglycol Dimaleate to help strengthen dry, brittle and damaged hair that is prone to breakage. Colour-safe and sulphate free, this highly nourishing shampoo is proven to reduce breakage, leaving it feeling silky soft with a healthy, glass-like shine. Benefits of Olaplex No.4 Bond Maintenance Shampoo: Free of DEA, Aldehydes and Formaldehyde Suited to all hair types, especially those who require clarifying or oil control. Vegan and cruelty-free Gluten and nut free Paraben free, sulphate free and phthalates free Olaplex's No.4 Bond Building Shampoo helps to protect and prevent damaged hair, frizz and split ends by rebuilding broken bonds. Gentle enough to be used daily with a PH balance of 6-6.5, this vegan and cruelty-free shampoo thoroughly cleanses and hydrates brittle, exhausted hair caused by continuous bleaching, colouring and heat styling. This hair saviour will leave your tre