- Contains patented technology that finds and re-links broken disulphide bonds in the hair - Helps to increase moisture levels, enhance shine - Colour safe and helps to maintain high quality colour  OLAPLEX No. 4 Bond Maintenance Shampoo Read The Beginners Guide to Olaplex here Have you got hair that\'s tired from breakage caused by heat styling, chemical treatments, and everyday wear-and-tear? The OLAPLEX No. 4 Bond Maintenance Shampoo will repair and protect all hair types from any damage, leaving it good as new immediately after use. Boasting Olaplex’s patented technology, this vegan and sulphate-free formula relinks hair’s broken bonds while increasing moisture levels and enhancing its natural shine. Paired with the OLAPLEX No.5 Bond Maintenance Conditioner along with the weekly OLAPLEX No.3 Hair Perfector this creates the recipe for a hair-care routine that matches no other.Key Benefits: Vegan friendly & cruelty free formula suitable for all hair types Patented techology helps maintain hair\'s health & strength between salon appointments Maintains high quality colour Relinks broken bonds in hair & reverses damage caused by heat styling, chemical treatments. Read Kates Review Here How to use: Use every time you shampoo your hair OR when rinsing OLAPLEX No.3 Hair Perfector from your hair. Use a small amount as it is highly concentrated. Suitable for all hair types. Avoid contact with eyes.  Size: 250ml