Refine frizzy, hard-to-manage tresses with the Goldwell Kerasilk Control Rich Protective Oil; a nourishing dry oil that smoothens unruly locks whilst simultaneously offering protection from humidity, frizz and heat. Developed with exclusive KeraShape Technology, the lightweight oil harnesses a new generation of smoothing ingredients like Glyoxylic Acid, Keratin, and Silk Proteins to penetrate deep into the hair shaft, creating new keratin bonds that stabilise the hair shape for up to five months. Applied to the lengths and ends of damp, towel-dried hair, the leave-in treatment leaves rebellious locks silky, shiny, tamed and prepped for styling.