When silk pillowcases initially became popular, thanks to brands like Slip, paying almost $100 for a single pillowcase was fairly normal. This was because of the material: mulberry silk ...

Meanwhile, if you’re a side sleeper, silk is one ... Candida Lawson says. Slip has a loyal following, from Kourtney Kardashian, who sleeps on one of the brand’s pillowcases every night ...