Listing includes OLAPLEX Nº 4, Nº 5, Nº 6, and Nº 7 OLAPLEX Bond Building Technology is proven to relink broken disulfide bonds damaged by chemical services, heat, and styling. All bottles are new When hair is stressed, it can quickly become fragile and lose its luster. Repair and restore dry locks. Returns your hair to a healthy state. OLAPLEX is for all hair types and conditions Nº.4 (8.5 oz) Bond Maintenance Shampoo- Gently cleanses, hydrates, nourishes, strengthens, repairs & maintains healthy-looking hair. Nº.5 (8.5 oz) Bond Maintenance Conditioner- Nourishes and hydrates hair without causing heaviness. Moisturizes and hydrates. Detangles and improves manageability. Repairs and maintains healthy-looking hair. Nº.6 (3.3 oz) Bond Smoother- Strengthens, hydrates, moisturizes and speeds up blow dry times while smoothing. Eliminates frizz and flyaways. Nº. 7 (1 fl oz) Bonding Oil- Boosts shine, strengthens and repairs all hair types. Reinforces hair's moisture barrier. Deeply nourishes hair. Protects against humidity and color fadingQ