Sulfate free shampoo specifically designed for hair extensions and hair loss sytems, Sulfate free is a milder detergent product. The benefits of sulfate free products are: Retaininig scalp health retaining hair moisture whiich is less likely to strip natural oils from the scalp. Reduces frizz and dryness. A better option for sensitive skin, less likely to cause scalp irritation. Sulfate free products are great for colour hair keeping the longevity.