Many purportedly “silk” pillowcases incorporate materials like satin and polyester, but the Silkcase Mulberry Silk Pillowcase is made of 100 percent pure Grade A mulberry silk. While the quality of cotton pillowcases is measured in thread count, the density of silk is measured by momme (the higher the momme, the more silk); at 22-momme, Silkcase’s option is the perfect density for a silk pillowcase—not too light, not too heavy. According to the brand, this pillowcase reduces friction by 85 percent, meaning that it creates a smooth surface that your hair and skin can rest on. The results? Less wrinkles and less frizz. To buy: $25 with coupon (was $46); amazon.com. Another reviewer said the pillowcase is as “soft as butter” and that they “can definitely notice a difference in that there are no broken hair pieces on the pillow in the morning.” The Silkcase pillowcase is also great for hot sleepers, as the material is cool and breathable. While high-quality silks can go for hundreds, the Silkcase pillowcase is on sale for as much as 41 percent off right now, not including that coupon, and just $25. With winter around the corner, you’ll probably want to pick up a few of these frizz-fighting pillowcases while this sale lasts. To buy: $25 with coupon (was $34); amazon.com. To buy: $25 with coupon (was $46); amazon.com.