The Redken Acidic Colour Gloss Sulphate-Free Shampoo rinses away impurities and excess oils while boosting hairs visible vibrancy and shine for up to 16 washes*. n Specifically developed for colour-treated hair, the shampoo utilises innovative technology to protect the hair from potential dulling agents, such as pollution and heat. Citric acid clarifies from root to tip while enhancing the longevity of dyed colour. Infused with the brands Acidic Shine Complex, the shampoo is infused with amino acids and conditioning agents to elevate the hairs visible shine for an ultra-glossy finish. n *When using shampoo and conditioner