Aveda Color Control Shampoo 50ml X 2 - 100ml Total BN. How it works: Proven to prolong your hair colour up to 8 weeks thanks to its 4 plant-derived technologies which create an invisible shield around the hair to respect the hair's molecules and neutralise colour fading particles and protect your hair colour every time you wash. How to use: Massage the Aveda Color Control Shampoo into wet hair, then rinse thoroughly. Follow with Color Control Conditioner through the mid-lengths and ends. Rinse thoroughly