Davines Essential Haircare SOLU/ shampoo is an active, refreshing shampoo that deeply cleans and removes the residue left by styling products. It is ideal before perm or straightening treatments. For normal to heavily-styled hair. Sudsy and airy, SOLU/ shampoo is deeply clarifying to cleanse product build-up and residue from hair using buckwheat extract, leaving it super clean. Hair is refreshed, lifted, and easy to style.