Magic Sleek Maintenance Shampoo Conditioner is gentle enough for color-treated hair and contains essential oils that will help prolong the life of your hair straightening treatment. Magic Sleek is the most effective system for damaged hair; developed with tropical fruit extracts from the Amazon rainforest. These components are rich in vitamin E and contain Omega-3 and Omega-9 unsaturated fatty acids which provide nutrition to the hair. Magic Sleek has been rigorously tested for safety and effectiveness and is 100% free of any formaldehyde and formaldehyde producing chemicals.