Loreal Hair Expertise Eversleek Smoothing & Intensely Nourish Shampoo Sulfate-Free Smoothing System uses natural oils to weightlessly smooth hair. Unlike ordinary smoothing shampoos with silicones that coat hair, Eversleek combines Argan, Sunflower, and Olive oils to penetrate the hair for 48-hour frizz control. Eversleek smoothes frizzy, unruly hair, improves texture and leaves hair sleek and manageable.