Our Natural Collection of 19 Momme Luxury Pillowcases (with a cotton underside) is a bedding essential. Sleeping on 19 momme mulberry silk encourages skin cell repair by soothing the skin. Sleeping on silk also improves hair texture by preventing frizz and split ends. Because of silk’s natural protein properties, it does not dry out your hair but helps to retain moisture and the natural oils your hair produces. If your hair is prone to thinning or falling out, silk can help minimize friction between your hair and the fabric, helping your hair rest and renew while you sleep.