Silk proteins contained in Bio Silk Hydrating Shampoo penetrate hair to condition & create incredible shine. With Bio Silk’s Hydrating System this shampoo protects from damaging UVA/UVB rays ensuring that your hair stays healthy & strong. Directions of use: Apply shampoo to damp hair & work into a rich lather. Rinse thoroughly. Repeat if necessary. Use with Bio Silk Hydrating Conditioner.