Silk Pillowcase for Hair and Skin - 600 Thread Count 100% Mulberry Silk Bed Pillowcase with Hidden Zipper, King Size Black

【100 Mulberry Silk Pillowcase】Our silk pillowcases are made of 100% high quality pure natural silk, both side 19 600 thread count silk, soft, breathable, cool,smooth.
【Silk Pillowcase for Hair and Skin】Silk contains natural proteins and amino acids that help promote the production of collagen and elastin. They work together whilst you sleep, anti-aging, beauty wrinkle-free. Among all the fibers, the coefficient of friction of the silk is the lowest, only 7.4%! Silk pillowcase also helpful to prevent hair from becoming knotted and matted.