Listing includes OLAPLEX Nº 0, Nº 3, Nº 4, and Nº 5 OLAPLEX Bond Building Technology™ is proven to relink broken disulfide bonds damaged by chemical services, heat, and styling. All bottles are new Nº.0 (5.2 oz) Intensive Bond Building Hair Treatment- Primes, repairs, strengthens and protects all hair types. Nº.3 (3.3 oz) Hair Perfector- A pre-shampoo hair treatment that reduces breakage and split ends for visibly healthier hair. 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.