OLAPLEX Limited Edition Bond Maintenance System Set of No 3, 4, & 5 Brand new in box. Box may have some light wear from shipping. - Jumbo-size No. 3 Hair Perfector (8.5 oz.): A concentrated hair treatment that strengthens hair from within, helping to reduce breakage and improving look and feel. - Full-size No. 4 Bond Maintenance Shampoo (8.5 oz.): A highly moisturizing, reparative shampoo that leaves hair healthier, shinier and more manageable with each use - Full-size No. 5 Bond Maintenance (8.5 oz.): A conditioner that helps restore, repair and hydrate hair without adding excess weight. How to use: Before you wash hair, apply No. 3 Hair Perfector generously to damp hair from scalp to ends until hair is thoroughly saturated. Leave on for a minimum of 10 minutes (or longer if desired). Rinse from hair. Lather and massage No. 4 Bond Maintenance Shampoo into wet hair, concentrating on the roots. Rinse well. Apply a generous amount of No. 5 Bond Maintenance Conditioner from root to tips. Leave on for three minutes, then rinse. Can be used 2 to 3 times a week for very damaged hair.