The acidic formula works by restrengthening the hair back to its healthiest pH [pH 4.5-5.5], sealing in the cuticle, so your colour is locked in and protected from dulling agents such as pollution and heat. With Redken's revolutionary Acidic Shine Complex, you can now level up your salon services by leaving your clients hair with a red-carpet like shine. Inspired by Redken's iconic Shades-EQ, the Complex is formulated with a blend of amino acids and conditioning agent's that deposit glossing molecules to the hair for glass-like shine. With every application achieve shine that not only looks but feel healthy, with hair feeling hydrated for up to 72 hours**.

*when using full system

**based on consumer test - Acidic Color Gloss system of shampoo & conditioner

The sulphate-free formula also provides a gentle lather, smoothing each strand from root to tip, preventing the fading of your hair colour during the cleansing process for more vibrant, healthy-looking and feeling hair.