Una professional care that protects hair during chemical treatments | Chemical treatments weaken hair – the protective treatment Revox B77 PLEX Bond Multiply Formula. Step 1 will restore it even before it is lost. It works during coloring, bleaching, or straightening and protects the struttura of the hair from the inside. It strengthens bonds, restores elasticity, and significantly reduces the risk of damage. The lightweight formula mixes easily with professional products and does not weigh hair down. For a healthier and stronger appearance from the very first application.