OLAPLEX repairs and protects your hair from everyday stresses including damage, split ends, and frizz. This duo features the No.4 Bond Maintenance Shampoo (250ML) and No.5 Bond Maintenance Conditioner (250ML) - the perfect combo to keep your hair hydrated and healthy. Better when used togther, this duo helps your hair by re-linking broken bonds, leaving the hair easier to manage, shinier and healthier. Both are colour-safe and proven to reduce breakage and strengthen all types of hair.  Worth Noting Strengthens and repairs Reduces breakage Highly nourishing and moisturizing pH balance: 6-6.5 (shampoo), 4.0-5.0 (conditioner)  Vegan and Cruelty-free Gluten-free and Nut-free Paraben-free, Sulfate-free, Phthalate-free, Phosphate-free Free of DEA, Aldehydes and Formaldehydes Standout Ingredients Bond-Building Technology restores damaged and compromised hair by repairing from the inside out with their patented single ingredient, Bis-Aminopropyl Diglycol Dimaleate How-To Formulated for daily wash use. Concentrate on roots and massage in to bring to a lather. Rinse thoroughly and follow with OLAPLEX No.5 Bond Maintenance Conditioner Use after rinsing No.3 Hair Perfector from hair