Davines OI Liquid Luster is a rinse-off treatment that is perfect for all hair types. This fluid, weightless treatment instantly adds extra shine, silkiness, and extreme softness to the hair, leaving it with a glass-like finish. To use, simply apply the treatment directly to fully saturated hair, comb through, and rinse out. For best results, use 1 dose (20ml) for short hair and 2 doses (40ml) for long hair. It is recommended to follow with OI conditioner (sold separately) for even more nourishment and hydration. With Davines OI Liquid Luster, you can achieve the perfect, glossy hair you've always wanted.