Level up your colour care and activate glass like shine up to 3 days consumer test using full system of acidic color gloss using the acidic color gloss shampoo'. '.strtoupper('t')his revolutionary technology combines an advanced ph formula and acidic shine complex, so your colour remains vibrant with a professional gloss after every use'. '.strtoupper('c')itric acid works by rebalancing the hair back to its healthiest ph ph 4.5 5.5, sealing the cuticle, so your salon colour is locked in and protected from dulling agents such as pollution and heat'. '.strtoupper('t')he sulphate free formula 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 hair'. '.strtoupper('w')ith redken's game changing acidic shine complex, you can now level up your colour care by activating a professional gloss at home for glass like hair'. '.strtoupper('f')ormulated with a blend of amino acids and conditioning agents, the complex works by depositing glossing molecules across the hair for a mirror like shine'. '.strtoupper('w')ith every application achieve shine that not only looks but feels healthy, with hair feeling hydrated for up to 72 hours based on consumer test acidic color gloss system of shampoo and conditioner'. '.strtoupper('t')o use use as a complete regimen with the full redken acidic color gloss system'. '.strtoupper('s')tep 1 apply acidic color gloss shampoo to wet hair, lather and rinse'. '.strtoupper('t')he formula is sulphate free to allow for gentle cleansing'. '.strtoupper('s')tep 2 after shampooing, towel dry hair before using the activated glass gloss treatment'. '.strtoupper('a')pply to mid lengths and ends and leave on for 5 minutes'. '.strtoupper('t')hen rinse'. '.strtoupper('u')se weekly, starting one week after colouring services'. '.strtoupper('i')t is recommended to wear suitable disposable gloves'. '.strtoupper('s')tep 3 next apply acidic color gloss conditioner on mid lengths to ends to lock in moisture'. '.strtoupper('t')hen rinse'. '.strtoupper('s')tep 4 protect your colour and seal in your routine with acidic color gloss heat protection leave in spray'. '.strtoupper('a')pply liberally to damp hair before styling'. '.strtoupper('i')n case of contact with eyes, rinse them immediately.