Professional care that protects hair during chemical treatments| Chemical treatments cause hair to lose strength – the protective treatment Revox B77 PLEX Bond Multiply Formula. Step 1 will restore it even before it is lost. It works already during coloring, bleaching, or straightening and protects the hair structure from within. It strengthens bonds, restores firmness, 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.