Benefits of the Silk Cap. The perfect companion at night, this simulated silk hair scarf is designed to protect your hair from breakage and frizz, locking in your natural hair oils. Simulated silk hair wraps have a soft, smooth texture that allows hair to glide over the surface without damage. Just as it helps your skin retain moisture, it also keeps your hair softer. Wearing your hair in a silk hair wrap overnight is a natural nourishing treatment.Beautiful bow design at the front and elastic band at the back: equipped with a durable elastic band to keep your head snug and comfortable.