L'Oréal Professionnel Serie Expert Liss Unlimited Shine Perfecting Blow Dry Contains smoothing agents to provides a long lasting, anti-humidity shield to control the hair and keep it frizz-free. The light, water-soluble formula, envelops the hair giving it a fabulous shine and controlled smoothness. Hair Type: Unmanageable, frizzy hair By counteracting frizziness and calming unruliness, this leave-in serum helps hair reflect light for intense shine. Infused with Reflexium, it also envelops hair with a light, water-soluble film, so hair looks fabulously shiny without weighing hair down. How to Use: Rub a few pumps between hands and work through the lengths and ends of shampooed, towel-dried hair. Style as usual. Do not rinse. Tip: The quantity of serum needed is dependent on how much hair you have and how thick it is. Start with a small amount and add more as needed.