Instant ultra-shine and softening gloss treatment for all hair typesOI Liquid Luster is a cutting-edge, water-light hair gloss treatment that delivers instant shine, weightless softness and a smooth, mirror-like finish in just seconds. Designed for all hair types, this rinse-out formula uses an innovative clear liquid texture that allows hydrating agents to penetrate the hair fibre directly, enhancing softness, manageability and luminosity without any processing time.