Overworking Your Hair to Get a Straight Look? With Brazilian Murumuru Butter 2 Promotes 10X Smoother Hair 3 Helps Reduce Flatiron Time Intensely nourish in the shower for hair that s up to 10x smoother, stronger* faster to flatiron* America s #1 Sleek Expert brings you our most intense smoothing care to help straighten strengthen the most demanding hair, starting in the shower. *In a combing test and a brushing test when using Garnier Fructis Sleek Shine Brazilian Smooth System of Shampoo, Conditioner and Flatiron Express Treatment, compared to a non-conditioning shampoo. *In a consumer test using Garnier Fructis Sleek Shine Brazilian Smooth System of Shampoo, Conditioner and Flatiron Express Treatment. Based on IRI latest 52 weeks ending July 2014 on Shampoo, Conditioner and Treatment in Hair care.