Olaplex No.5 Bond Maintenance Conditioner 250ml. Re-hydrate and restore your hair with the Olaplex No.5 Bond Maintenance Conditioner. The best-selling conditioner targets the appearance of frizz and breakages and helps to fortify damaged hair.. Designed for hair weakened by frequent colouring, bleaching, chemical treatments and heat styling, the formula works to re-link broken disulphide bonds and fortify hair structure. The strengthening conditioner provides hair with hydration to promote manageability and vibrancy.. Maintain healthy-looking tresses with enhanced shine thanks to this bond-repairing formula.. Vegan and cruelty-free.