Pure Silk Queen Pillowcase With Scalloped Edge TurquoiseWhy switch to a slip pure silk pillowcase? Real results, real benefits in just 4 nights! Clinically shown* to visibly improve: the appearance of fine lines, skin hydration , skin texture and smoothness , skin radiance, luminosity or brightness. Over 95% of users agreed sleep creases, sleep lines and sleep wrinkles were fewer and less noticeable.