What Is the Best Silk Pillowcase? How to Tell a Good One
The best silk pillowcase is the one whose specs you can check for yourself: 100% silk on the fibre label, ideally mulberry silk, a fabric weight between 19 and 25 momme, silk on both faces, and certificates with a number you can look up. Among quality silk pillowcases, 22 momme is a common weight. Closure, size, care and price then decide which silk pillowcase suits you.
How to choose a silk pillowcase: the checklist at a glance
The table sums up what to look for in a silk pillowcase; the sections below explain each row.
| Criterion | What to look for | How to check | What it does not tell you |
|---|---|---|---|
| Fibre | “100% silk”, ideally mulberry silk | the fibre composition on the label | weight or grade |
| Momme | 19 to 25; 22 is common among quality ones | “momme” or “mm” on the product page | the quality of the fibre |
| Grade | Grade 6A raw silk | the seller's specification (usually cannot be looked up) | whether it is silk |
| Both faces | silk front and back | a statement that both sides are silk | weight or grade |
| Certificates | GOTS, OEKO-TEX | the number, in the certifier's database | any effect on skin or hair |
| Closure | hidden zip or envelope flap | photos and description | anything about the fabric |
| Size | your pillow's size | measure the pillow | quality |
| Care | instructions that suit your laundry | the care symbols, before buying | how long it will last |
| Price | a price that fits the specs | compare specs, not headlines | whether it is silk |
Fibre: silk, satin or a blend
Silk is a fibre; satin is a weave in which long threads lie across the surface to give one smooth, glossy face. A pillowcase labelled only “satin” is often polyester or another synthetic fibre. The fibre composition on the label is where the material is declared: “100% silk” means silk fibre, while a blend carries each fibre's percentage instead. Words like “silky”, “satin finish” or “silk-touch” are not fibre statements. Our guide to silk vs satin compares the two in use.
Silk woven in a satin weave is sold as silk satin, the usual construction for quality silk pillowcases. Anyone looking for the best mulberry silk pillowcase should look closely at where the word “mulberry” appears. Some sellers write “100% mulberry silk”; “silk” is the fibre name, and “mulberry” is the seller's addition to it. Our guide to mulberry silk explains what sets it apart from other silk.
The best momme for a silk pillowcase
Momme is a unit of fabric weight, not a thread count like the one quoted for cotton sheets. One momme is roughly 4.34 grams per square metre, so 22 momme is about 95 g/m², and “22mm” on a silk label means 22 momme, not 22 millimetres.
19 momme is often given as the entry point, 22 as the usual weight for quality pillowcases and 25 as the upper end for bedding. The momme figure describes the fabric, not the quality of the fibre. If a silk product states no momme at all, that is not automatically a bad sign, but it is worth asking about. Our guide to momme has the full weight table.
Grade 6A: what the raw-silk grade adds
Grade 6A is the top class in the Chinese raw-silk standard (GB/T 1797), a multi-factor assessment that weighs evenness, cleanliness and strength among other things. Momme measures the woven fabric; the grade rates the raw silk it was woven from. Unlike a certificate, a grade usually cannot be looked up anywhere. Momme, grade and a high price are plausibility hints, not proof: the fibre statement on the label is where the material is declared.
Silk on both faces, or only on the front
A single-sided silk pillowcase has silk on the front and a back of cotton or polyester; a double-sided one is silk on both faces. Pillows get flipped in the night, so the back can end up as the side you sleep on. Look for an explicit statement that both sides are silk.
Certificates: what they prove and how to check them
OEKO-TEX STANDARD 100 means the finished textile has been tested for harmful substances; GOTS certifies textiles made from organically grown fibres, with environmental and social criteria audited through processing. OEKO-TEX MADE IN GREEN builds on the same harmful-substance testing and additionally stands for traceable, certified production. OEKO-TEX runs a label check on oeko-tex.com, and GOTS keeps a public database of certified suppliers. A logo without a number gives you nothing to look up, and “organic” with no certificate behind it cannot be verified.
A Dermatest seal certifies that skin compatibility was tested, not that the fabric treats any skin condition. One point no certificate changes: silk is an animal fibre, and in conventional production the silkworms are killed inside the cocoon.
Zip or envelope closure
A hidden zip closes the case fully and keeps the pillow in place, with a small piece of hardware to close before each wash. An envelope closure, the overlapping flap known from hotel bedding, has no hardware and relies on the depth of its flap. Neither is better in itself.
Size: match the pillow, not the label
Measure your pillow before comparing products. In the US, a standard pillow is usually 20 × 26 in (51 × 66 cm), a queen 20 × 30 in (51 × 76 cm) and a king 20 × 36 in (51 × 91 cm). In Germany, 40 × 80 cm and 80 × 80 cm are the common pillow formats. Our guide to pillowcase sizes covers the UK, German and US formats and how to measure a pillow.
Care is part of the choice
Check the care instructions before you buy, not after.
- Read the care label first. It says whether the case may be washed at home, by machine or by hand, and how warm at most. The maximum sits on the care label, and nowhere else.
- Choose a protease-free detergent. Proteases are enzymes that break down protein, and silk is a protein fibre.
- Wash within the label's limits. Where machine washing is allowed, close the zip, turn the case inside out, use a mesh laundry bag and a delicate or silk programme.
- Dry it as the drying symbol shows. Keep it away from direct sun and radiators.
- Consider buying two. Changing a pillowcase once a week is easier with a second one to alternate with.
Stains, ironing and each care symbol are covered in our guide on how to wash silk.
Cheap vs expensive: why silk pillowcase prices differ
The US sleep resource Sleep Foundation puts many silk pillowcases sold individually in the $40 to $120 range. The spread follows the checklist: fibre, momme, grade, one or two silk faces, certificates, closure and sales channel.
A very low price proves nothing on its own, but it's a reason to read the fibre statement twice. A high price is no proof either. Neither the spec sheet nor the price tells you in advance how long a particular pillowcase will last, so the returns policy of the shop you buy from is worth reading.
Are silk pillowcases worth it?
A silk pillowcase is worth it if you want a smoother surface to sleep on. Mulberry silk is spun from exceptionally long, even threads, and that is where its smooth surface starts. A tightly woven silk face gives hair fewer points to snag on, and many people report less frizz and fewer tangles in the morning. A polyester satin also reduces the snagging that contributes to breakage and morning frizz, so on a small budget satin is not a wrong choice. The best silk pillowcase for hair is judged by the same specs as any other.
People who sleep on their side often report fewer pillow lines on their skin. A dense silk weave also takes up liquid less readily than a cotton weave, and many people find less night cream ends up in the case.
A silk pillowcase is not a treatment: there is no clinical evidence that it helps against acne or bacteria or slows skin ageing, and it cannot repair hair that is already broken.
It also asks for more than a cotton case does in return: a gentler wash, a higher price, and a low temperature ceiling on its care label. How the two fabrics compare on friction, moisture, warmth, care and price is set out in our guide to cotton vs silk pillowcases.
Our guide to silk pillowcase benefits takes each effect in turn, with where the evidence stops.
How is the best silk pillowcase decided in tests?
An editorial ranking is built on the tester's own criteria, so first place means first by that test's measures. Tests differ in what they rate; lab-based tests add measurements such as strength, washability and moisture management, often with feedback from home testers. Before relying on a ranking, ask which criteria were measured, how many pillowcases were compared and when the test was done. We have not run a comparative test of silk pillowcases, and this guide ranks none: it gives you the criteria so you can judge for yourself.
Silk pillowcases at RENESSY
This guide comes from a silk pillowcase maker, so here are our own specs against the same checklist. The RENESSY silk pillowcases are 100% organic mulberry silk, 22 momme, Grade 6A, with silk on both faces. The silk is GOTS certified. The pillowcases carry the OEKO-TEX MADE IN GREEN label with the label ID M27MNB1V9, which you can look up in the OEKO-TEX label check. Their skin compatibility is dermatologically tested by Dermatest, including for sensitive skin, and they carry the Dermatest 5-Star seal and Sensitive Skin seal. The closure is a hidden YKK zip under an inner fabric flap.
Frequently asked questions
What is the best silk pillowcase?
The best silk pillowcase is one you can verify: 100% silk, ideally mulberry, 19 to 25 momme, silk on both faces and certificates with numbers you can look up.
Are silk pillowcases worth it?
Silk pillowcases are worth it if you want a smoother surface to sleep on, and many people report less frizz. There is no clinical evidence that a silk pillowcase treats acne or slows skin ageing, and it costs more and needs gentler care than most cotton cases.
What momme is best for a silk pillowcase?
For a silk pillowcase, 19 to 25 momme is the usual range, and 22 is a common weight for quality pillowcases.
Which brand makes the best silk pillowcase?
No single brand makes the best silk pillowcase for everyone. Judge any brand by what its product page lets you verify: fibre statement, momme, silk on both faces and certificate numbers.
Cheap vs expensive silk pillowcase: what actually matters?
What actually matters is the checkable specs: silk on the fibre label, the momme figure, silk on both faces and certificates you can look up.
How can I tell if an organic silk pillowcase is really certified?
Look for GOTS, the certificate for organic fibre, with a number you can find in its public database of certified suppliers. OEKO-TEX labels cover harmful-substance testing, not organic fibre.
RENESSY · Updated September 2026