Say hello to your hair's new favourite double act... AKA OLAPLEX's Shampoo and Conditioner Maintenance Bundle. Powered by the brand's patented Bond Building Technology, this pairing is designed to rebuild the damaged bonds in your hair. Confused? Let us explain; in short, they work to strengthen your tresses, prevent breakage and repair split ends. The No. 4 Bond Maintenance Shampoo is a colour-safe hero, whereas the No. 5 Bond Maintenance Conditioner is a highly concentrated reparative treat for your hair. We're ob tress ed. Contents: No. 4 Bond Maintenance Shampoo (250ml) No. 5 Bond Maintenance Conditioner (250ml)