• Formulated with OLAPLEX Bond Building chemistry
• Restores internal strength and moisture levels
• Adds incredible shine and manageability Suitable for all hair types; especially chemically treated hair
• Vegan, Colour Safe, PH Balanced and Cruelty-Free
• Free from Parabens, Sulphates, Phosphates, Gluten and Nuts

Protect and repair damaged hair and split-ends with the gentle cleansing and reparative OLAPLEX No.4 Bond Maintenance Shampoo. With the ability to strengthen all types of hair, No.4 leaves it shinier and more manageable with every wash. Using the same patented ingredient as the OLAPLEX professional system, Bis-Aminopropyl Diglycol Dimaleate, No.4 works by finding single sulfur hydrogen bonds and cross-linking them back together to form disulfide bonds. Disulfide bonds are broken through chemical procedures such as colouring, thermal interference like heat and UV damage, and mechanical processes like brushing and combing. With this single active ingredient repairing and reinforcing the hair fibre, the result is stronger, healthier hair with enhanced colour longevity and vibrancy. No.4 Bond Maintenance Shampoo works seamlessly with No.5 Bond Maintenance Conditioner and No.3 Hair Perfector as part of the OLAPLEX 3-4-5 regimen for a professional treatment experience at home. OLAPLEX is colour-safe, vegan, PH balanced and completely free from cruelty, DEA, aldehydes, formaldehyde, silicone, parabens, sulphates, phosphates, gluten and nuts. Join the OLAPLEX revolution for a truly one-of-a-kind solution to restoring the natural texture of hair, boosting its elasticity and transforming its health.