Revive the appearance of damaged lengths with the Olaplex Rich Hydrating Mask & No.4 Bond Maintenance Shampoo Duo. Powered by Olaplex’s patented Bond Building Technology™, the duo works in harmony to hydrate, smooth and strengthen the look of strands after every use. Set Contents: No.4 Bond Maintenance Shampoo 250ml A clarifying shampoo formulated to sweep away excess oils, debris and product build-up without stripping the hair's natural moisture. Rich Hydrating Mask 200ml The ultra-creamy treatment delivers intense hydration from root to tip in as little as five minutes. Enriched with moisture-locking emollients and botanical oils, the formula smooths the appearance of flyaways, leaving hair soft and shiny.