Silk vs Cotton Pillowcase: Which Is Better?

It depends on what you want from the night. For your skin and hair, silk is the clear winner — it's smoother, less absorbent and gentler, so you wake with fewer creases, less frizz and less moisture stripped away. 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 where silk pulls decisively ahead. Cotton, under a microscope, is a rough, fibrous surface that catches and tugs as you move through the night — roughening the hair's cuticle into frizz and breakage, and creasing the skin into the lines we call sleep marks. Silk's surface is far smoother, so hair glides across it and skin is dragged far less. If your hair is fine, curly or colour-treated, or your skin is prone to creasing or breakouts, that nightly difference in friction is the single biggest reason people make the switch — and rarely switch back.

Moisture: what happens to your skin's hydration

Cotton is thirsty; silk is not. Cotton is famously absorbent — wonderful in a towel, less so under your face, where it wicks away your skin's natural oils, the moisturiser you applied before bed, and the water your hair needs to stay supple. Silk absorbs far less, so it leaves that hydration where it belongs: on your skin and in your hair. You feel it most in the morning — skin that's still soft rather than tight, hair that hasn't dried out against the pillow overnight.

Temperature, hygiene and durability

Here the picture's more even-handed. Both are breathable natural fibres, but silk is the better thermoregulator — cool when it's warm, warm when it's cool — while cotton can hold sweat once it dampens. 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 kinder 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 your priority is your skin and hair — if you fight frizz, wake with sleep lines, have sensitive or breakout-prone skin, or simply want the gentler 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 AU mulberry silk pillowcases are 22-momme, 100% mulberry silk, OEKO-TEX certified.

Cotton built its reputation honestly, over a great many comfortable nights, and it isn't going anywhere. But silk asks a little less of your skin and hair while you sleep — and once you've woken to the difference a few mornings running, the gentler surface tends to win the argument all on its own.