The REDKEN LIMITED EDITION COLOUR EXTEND GIFT SET DUO features a sulfate-free shampoo specifically formulated for colour-treated hair. Utilizing a multi-targeted delivery system and strategic ingredients, it effectively and gently cleanses, boosts vibrancy, and combats color fade. The pH-balanced acidic formula nourishes hair and prolongs colour vibrancy in between salon appointments, while amino-ions seal in hair colour for long-lasting results. Coupled with REDKEN COLUOR EXTEND CONDITIONER, this set is designed to soften and smooth hair while helping to preserve colour. Its nourishing and detangling properties work from root to tip, balancing the hair's pH levels and promoting vibrant, shiny hair colour. The result is easy-to-manage, deeply nourished hair with vibrant, long-lasting colour.