Pastel Collective Sleep On It Pure Silk Pillowcase - WhiteSleep On It Say goodbye to bad hair days and hello to better skin! The perfect bedtime companion helping to prevent damage and fight the visible signs of ageing, Our 100% 19 moome 6A grade mulberry silk fabric reduces friction and drag against the skin and hair while sleeping, resulting in fewer sleep creases when you wake. Not to mention, the same reduction in friction can also help to retain a hair style, resulting in less damaged and shinier