DERMATOLOGIST RECOMMENDED.*ANTI AGING. ANTI SLEEP CREASE. ANTI BED HEAD.™  OVER 95% OF USERS AGREED SLEEP CREASES, SLEEP LINES AND SLEEP WRINKLES WERE FEWER AND LESS NOTICEABLE.† The beauty secret of celebrity hairstylists, dermatologists and beauty experts.™ Includes 1 x white pure silk queen pillowcase with scalloped edge and invisible zipper closure (20" x 30" / 51cm x 76cm) |  Machine washable | See care instructions for details.  Learn more about our studies and testing under "Test and Study Details".