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 & heat. Developed with exclusive Kera Shape Technology, the lightweight oil harnesses a new generation of smoothing ingredients like Glyoxylic Acid, Keratin, & 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 & ends of damp, towel-dried hair, the leave-in treatment leaves rebellious locks silky, shiny, tamed & prepped for styling.