Best Silk Pillowcases UK 2026: 5 Top Picks
The best silk pillowcase UK for most people is the ZIMASILK 100% Mulberry Silk Pillowcase: it's genuine grade 6A silk on both sides, it sits at the 19 momme weight that balances softness with durability, and it's backed by nearly 30,000 verified reviews on Amazon UK.
If you want the most trusted no-fuss classic, the ALASKA BEAR 100% Mulberry Silk Pillowcase is where most first-time buyers should start. In practice, we see the fallout from cheap bedding every week, so I checked every candidate for what actually matters: real mulberry silk on both sides, honest momme weight, a closure that stays shut at 3am, and wash instructions a normal person can follow.
After all that checking, these five passed.
- Best overall: ZIMASILK 100% Mulberry Silk Pillowcase - 19 momme, grade 6A silk both sides, hidden zipper, around £21.
- Best classic pick: ALASKA BEAR 100% Mulberry Silk Pillowcase - the most reviewed option on Amazon UK with over 23,000 ratings.
- Real silk measurably reduces friction: textile researchers at TRI Princeton found lower friction force between silk and hair than between cotton and hair, and a 2020 study in the Journal of Cosmetic Dermatology found silk produced less hair friction than cotton and synthetic fabrics.
- Keep expectations honest: silk helps with friction and feels cooler, but the UK's large CLOTHES trial found silk garments didn't significantly beat standard care for children's eczema, so treat skin-cure claims with suspicion.
📚 Suggested Reading: Silk vs Satin Pillowcases · Best Sleep Masks UK 2026
What a silk pillowcase actually does (and doesn't do)
The strongest evidence for silk is friction. Every night, your head moves against the pillowcase hundreds of times while you shift between positions. Cotton fibres have a rough microscopic surface that snags hair cuticles and drags on skin, and that repeated friction is what creates frizz, split ends and those crease marks on your face in the morning.
Researchers at TRI Princeton measured the friction force between fabrics and hair directly, and silk came out clearly lower than cotton. A 2020 comparative study in the Journal of Cosmetic Dermatology reported the same pattern: silk produced less friction against hair than cotton or synthetic fabrics.
Silk is also less absorbent than cotton. Cotton wicks moisture away from your skin, which is brilliant for sweat but less brilliant if you have dry skin or skin that gets irritated overnight. Silk keeps more of your skin's natural moisture where it belongs, and it feels cooler to the touch because the protein fibres breathe better than polyester satin. That's why silk cases get recommended for hot summer nights, and why they pair well with a cooling pillow if you run warm.
Now here's the honest part. Silk is not a medical treatment. Studies in PubMed have looked at silk fabrics for atopic dermatitis, and some people with sensitive skin genuinely prefer silk's smoothness. But the largest UK trial on this, the CLOTHES trial run by the University of Nottingham and published through the NIHR, found that silk garments did not significantly improve children's eczema compared with standard care.
The NHS's own evidence review of silk garments reaches the same cautious conclusion. So buy silk for comfort, friction reduction and temperature, and see a GP if a skin problem is bothering you.
Comparison Table
| Product | Silk | Momme | Closure | Best For | Price |
|---|---|---|---|---|---|
| ZIMASILK | 100% mulberry, both sides | 19 | Hidden zipper | Best overall | ~£21 |
| ALASKA BEAR | 100% mulberry | Standard | Envelope | Classic first buy | ~£26 |
| Texbee | 100% mulberry | 22 | Envelope | Maximum density | ~£17 |
| OLESILK | 100% mulberry, both sides | 16 | Hidden zipper | Hot sleepers | ~£20 |
| Vespersilk | 100% mulberry, both sides | Grade 6A | Envelope | Bundle value | ~£26 |
1. ZIMASILK 100% Mulberry Silk Pillowcase - Best Overall
ZIMASILK 100% Mulberry Silk Pillowcase is the pick I keep coming back to, and the numbers explain why. It's 100% mulberry silk on both sides at 19 momme, the weight most premium brands settle on because it's dense enough to survive weekly washing without feeling like a tent. The silk is graded 6A, the top commercial grade, and the case closes with a hidden zipper rather than a flappy envelope, which means it doesn't slide off your pillow halfway through the night.
Nearly 30,000 Amazon UK reviewers have rated it 4.5 stars, and the consistent themes in the reviews match what I'd look for clinically: smooth against skin, no dragging on hair, and no pilling after months of use. The 50x75cm standard size fits a UK standard pillow, and the brand offers king and super king variants for larger pillows. At around £21 it's not the cheapest case here, but it's the one I'd trust to last.
Wash it on a gentle 30°C cycle with silk detergent, dry it flat out of direct sun, and this case keeps its glide for years. If you only buy one silk pillowcase this year, this is the one.
2. ALASKA BEAR 100% Mulberry Silk Pillowcase - Best Classic Pick
ALASKA BEAR 100% Mulberry Silk Pillowcase has been the default first silk case for UK shoppers for years, and its 23,000-plus ratings at 4.5 stars make it the most reviewed option on this list. It's 100% mulberry silk in the standard 50x75cm size with a simple envelope closure, which keeps the price sensible and the design foolproof. There's no zipper to snag your hair on, which matters if you're new to silk.
The case is hypoallergenic and smooth on both sides, and it comes in a wide range of colours, which is rare at this price. The envelope closure means the case can shift slightly on an over-stuffed pillow, so if you're a restless side sleeper you might prefer the zipped ZIMASILK above. For everyone else, this is the safest first purchase on the list, and the one I'd suggest to anyone who wants to test whether silk is worth it before spending premium money.
At around £26 it's slightly pricier than the ZIMASILK, but the huge review base means you can read thousands of real experiences before committing. That's worth something when you're buying fabric you'll sleep on for years.
3. Texbee 22 Momme Mulberry Silk Pillowcase - Best Luxury Weight
Texbee 22 Momme Mulberry Silk Pillowcase is the heavyweight of the group. At 22 momme it's denser than the 19 momme standard, which translates to a more substantial, almost crisp hand feel and better durability over years of washing. Higher momme also means tighter weave, so it drapes a little less and holds its shape better, and it still breathes well enough for warm nights.
The trade-off is texture: some people find 22 momme slightly less soft than 19 momme until it's been washed a few times, so it's not the obvious choice for someone who wants maximum delicacy. It's ideal if you're a hot sleeper who wants a case that stays smooth and cool, or if you've been disappointed by thinner cases that went fuzzy after a few months.
At around £17 it's actually the cheapest case on this list, which makes it a genuinely good deal for the density.
Its 4.2 stars from over 4,500 ratings are the lowest average here, so read a spread of reviews rather than the headline score. The consistent praise is durability, and the consistent complaint is that it arrives a little stiff until the first wash softens it.
4. OLESILK 100% Silk Pillowcase - Best for Hot Sleepers
OLESILK 100% Silk Pillowcase takes the opposite approach to Texbee: it's a lighter 16 momme, which makes it the most breathable and the coolest case on this list. During a British summer, when your bedroom is still holding the day's heat at 11pm, a lighter silk case genuinely feels cooler against your cheek than a denser weave. It's 100% mulberry silk on both sides with a hidden zipper, so you get the secure fit of the ZIMASILK in a lighter package.
The 16 momme weight means it won't be as durable as the 19 or 22 momme options if you wash it weekly for years, but it holds up fine with proper care, and the lower density is exactly why hot sleepers choose it. It arrives in a gift box with a hidden zipper and comes in several colours. The 4.5-star rating from over 4,300 reviews backs up the feel.
If you sleep hot and you've already read our guide to silk vs satin pillowcases, this is the case that makes the silk argument stick on a warm night. Around £20, it's a middle-of-the-road price for a clearly defined job.
5. Vespersilk 100% Pure Mulberry Silk Pillowcase - Best Bundle Value
Vespersilk 100% Pure Mulberry Silk Pillowcase is the only pick here that bundles a matching silk sleep mask in the box, and that alone makes it the smartest gift buy on this list. The case is grade 6A silk on both sides with a smooth, 600 thread count style finish, and it's rated 4.6 stars, the highest average here. The included mask is genuine mulberry silk too, which pairs beautifully with our best sleep masks guide if you're building a full sleep setup.
In practice, the case feels every bit as smooth as the ZIMASILK, and the mask is a genuinely usable accessory rather than a throwaway extra. For around £26 you're getting two silk items for roughly the price of one premium case, which makes it excellent value for a first purchase or a birthday gift for someone who keeps stealing yours.
The only reason it's not higher on this list is that the mask is a standard flat silk mask, which some people find too simple compared with a contoured option. If you already own a mask you love, the case alone still earns its place.
How to Choose a Silk Pillowcase - What Actually Matters
Check it's mulberry silk on both sides. The cheapest listings say "silk" and quietly use polyester satin on one side, or satin throughout with a silk label. Look for "100% mulberry silk" in the title and confirmation that both sides are silk. Every pick above is silk on both sides, which is the baseline you should accept from any seller.
Momme weight is the quality number. Momme (mm) measures silk density, and it's the single most useful spec on a listing. Sixteen momme is light, cool and budget-friendly. Nineteen momme is the industry sweet spot for durability and softness. Twenty-two momme is the heaviest and most durable, best if you want a case that lasts. If a listing won't state the momme, treat it as a warning sign.
Choose your closure by how you sleep. Envelope closures are simple and hair-friendly, but they can shift on a firm pillow. Hidden zippers keep the case locked in place all night, which matters if you're a side sleeper who wrestles with bedding. In my physio practice I've lost count of patients who wake with a cricked neck because their pillowcase slid off mid-night and they ended up on a bare pillow, so the zipper option isn't vanity, it's positioning.
Size your pillow before you order. UK standard pillows are 50x75cm, and most cases are sold in that size, but king pillows need 50x90cm cases. Measure before you order, and remember that a case that's too big bunches up and defeats the purpose of a smooth surface.
Care is part of the purchase. Silk needs a gentle 30°C wash with silk detergent, no fabric softener, no bleach, and no tumble dryer. That's a small ritual once a week, and it's the difference between a case that lasts years and one that goes dull in months. Our bedding care guide covers the full routine, and if you're choosing between materials, the pillow buying guide explains how the case interacts with the pillow underneath it.
Silk Pillowcases - Your Questions Answered
Are silk pillowcases worth the money?
Yes, if you buy real mulberry silk. A genuine 19-22 momme case costs £17-£30 in the UK, and it reduces friction against hair and skin overnight, which is why textile researchers measure lower friction force between silk and hair than between cotton and hair. It won't fix insomnia or cure skin conditions, so treat it as a comfort upgrade, not a medical treatment.
What momme count is best for a silk pillowcase?
19 momme is the sweet spot for most people: dense enough to feel substantial and survive weekly washing, but still soft and breathable. 16 momme is lighter, cheaper and cooler, which suits hot sleepers. 22 momme is the heaviest and most durable option. Anything listed below 16 momme is usually thin and wears out fast.
How do you wash a silk pillowcase?
Hand wash or machine wash on a gentle 30°C cycle using a mild silk detergent. Never use fabric softener, bleach or biological powder, and never tumble dry. Dry flat away from direct sunlight and iron on the silk setting if you must. Looked after this way, a good case keeps its smoothness for years.
Do silk pillowcases help acne or eczema?
The evidence is mixed, and honesty matters here. Silk is smooth and less absorbent than cotton, so it drags less on skin and strips less moisture, which some people with dry or sensitive skin prefer. Small studies found silk fabrics helped some people with atopic dermatitis, but the large UK CLOTHES trial found silk garments did not significantly beat standard care for children's eczema. If a product promises to cure acne, treat that claim with suspicion.
What's the difference between silk and satin pillowcases?
Silk is a natural protein fibre spun by silkworms, while satin is a weave pattern usually made from polyester. Silk breathes better, regulates temperature and feels cooler in summer, which is why it costs more. Satin mimics silk's smoothness at a fraction of the price but traps more heat and doesn't wick moisture.
Final Verdict
Start with the ZIMASILK 100% Mulberry Silk Pillowcase if you want the best combination of genuine 19 momme silk, secure closure and a review base you can trust. Choose the ALASKA BEAR if you want the classic first buy with the deepest review history. Grab the Texbee 22 momme if durability is your priority, the OLESILK 16 momme if you sleep hot, and the Vespersilk if you want the mask bundle.
Whichever you pick, buy real mulberry silk, wash it gently, and it will outlast three cotton cases without losing its smoothness.
For more sleep guides, visit SleepReview.
Lisa Martin writes about sleep positions, pillows and the physical side of rest for SleepReview.
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. If you have persistent sleep issues, skin conditions or chronic pain, please consult a healthcare professional.
Last reviewed: 2026-07-31