Slip pure silk products are made using their proprietary blend of silk called slipsilk. This luxurious, hypoallergenic sham protects delicate facial skin and hair from the scratches, creases, and tugs caused by standard cotton, reducing split ends. Additionally, their proprietary blend of silk is designed to absorb less face cream, which keeps your skincare products on your skin (where they belong)! Silk Pillowcase by Slip in Orange, Women's, Cotton/Silk at Anthropologie