Silk vs Cotton Pillowcase: Which Is Better?

It depends on what you want from the night. For your skin and hair, silk has the smoother surface, which means less friction. Many people find that means fewer tangles and less frizz in the morning, and you may wake with fewer sleep creases. For sheer practicality — price, durability, a crisp cool hand and a tumble through a hot wash — cotton still earns its place. Neither is simply "better"; they're better at different things.

So the honest answer is a comparison, not a verdict. Here's how the two actually differ where it counts.

Friction: how each treats your skin and hair

This is silk's clearest difference. Cotton, under a microscope, has a rougher, more fibrous surface, and it can catch and tug on hair as you move through the night. Silk's surface is smoother, so hair has less to catch on. Many people notice the difference in tangles and frizz, and it may mean fewer sleep creases. If your hair is fine, curly or color-treated, that difference in friction is a common reason people make the switch.

Moisture: what the numbers say

Silk is often said to absorb less than cotton. Standard textile tables say otherwise: moisture regain is about 11% for silk and about 8.5% for cotton. So silk isn't the less absorbent of the two, and we know of no good evidence that a cotton pillowcase strips your skin or hair of moisture. Any pillowcase picks up some of what's on your skin and hair, so wash it regularly.

Temperature, hygiene and durability

Here the picture's more even-handed. Both are breathable natural fibers. Silk can feel cool at first touch and cotton has a crisp hand of its own, but neither regulates temperature. On hygiene they're a draw: any pillowcase needs regular washing, and a clean cotton one beats a neglected silk one every time. Durability is cotton's quiet strength: it shrugs off hot washes and hard wear in a way silk won't. But well-cared-for silk lasts for years too — it simply asks to be washed gently rather than thrown in on a hot cycle.

Cost and care — is silk worth the extra?

Cotton is cheaper to buy and more forgiving to launder, and there's no pretending otherwise; silk costs more and prefers a cool, gentle wash. The question is what you're buying the difference for. If it's a smoother surface for your skin and hair night after night for years, the premium spreads out to a few cents a sleep — which is why so many people decide it's worth it. (If you've ever wondered exactly why silk costs what it does, that's its own small story; and our care guide shows just how easy the washing really is.)

So who should choose which?

Choose silk if you fight frizz, wake with sleep creases, or simply want the smoother surface and don't mind a careful wash. Choose cotton if budget is tight, you love that crisp, cool, laundered feel, or you want something you can wash hot and never think about. And plenty of people, sensibly, do both: cotton for the spare room, silk for the bed they actually sleep in. There's no wrong answer — only the one that suits the way you sleep.

If the skin-and-hair case is the one that speaks to you, our LS Silk US mulberry silk pillowcases are 22-momme, made from 100% mulberry silk certified to OEKO-TEX® STANDARD 100.

Cotton built its reputation honestly, over a great many comfortable nights, and it isn't going anywhere. But silk is the smoother surface, and after a few mornings waking on it, you'll know whether that matters to you.