Whether your blonde is natural, highlighted, balayage, or highly processed, you can choose your level of cool. Use once a week for maintenance, twice a week for gentle toning, or up to 3 times a week for optimal cool toning results. Restorative BondPlex is an exclusive blend of precious naturally-derived oils, that rebuild fragile hair bonds and re-hydrate to optimal levels necessary for healthy and shiny blonde hair. Thanks to our Restorative BondPlex, hair is instantly strengthened and restored. USE: Apply to wet hair and leave on for 10 minutes then rinse. Processing time can be increased by up to 40 minutes. The longer you leave it on the cooler tone you will obtain.