Kérastase Discipline Fluidissime Spray 150ml is for application on towel-dried hair before blow-drying. This is a leave-in product which covers several tasks, including protecting against heat damage, strengthening and repairing hair, increasing shine and suppleness, and protecting against frizz. It's great for fine hair to provide extra body, and for thick hair to provide extra control, but also allows for natural movement. This spray has a pro-keratin formula. Keratin is the protein structural material that makes up hair, nails and outer skin. It also protects epithelial cells from damage or stress. With heat protection up to 450F, Kérastase Discipline Fluidissime Spray is perfect even for use with hot hairdryers. It also includes surface-morphing polymer technology, forming a bond over each strand to reduce frizz. The full benefit of this unique spray is seen when styling begins. Friction between strands is decreased, blow-drying time is reduced and increased control results in a frizz-free, salon-quality finish, leaving your hair smooth, shiny and easy to manage.