Slip Pure Silk Pillowcase Review
Slip · Mulberry Silk (22 momme) · Soft · Research review — based on manufacturer specifications and our research
Published by Mr. Squish · Sources and verification · Report a correction
Research review
We have not slept on this pillow ourselves yet. Everything below is based on manufacturer specifications and our research — including published materials, dimensions, care instructions, trial and warranty terms — plus how it compares with pillows in the same category. We do not present any of it as first-hand experience.
- Fill
- Mulberry Silk (22 momme)
- Last fact checked
- September 2026
Product/catalog imagery is for identification, not proof of an in-house physical test.
Slip is the silk pillowcase brand you see in dermatology-adjacent beauty coverage, and the product backs it up: a proprietary fabric they call Slipsilk — 22-momme, long-fiber mulberry silk with a finish the company says was refined over ten years to hit a specific balance of shine, thickness, softness, and durability.
We researched the Slip case on specs, care requirements, and owner feedback. It is the most beauty-focused product in this category, priced at the top of the market, and the case to beat on fabric feel.
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The Slip Pure Silk Pillowcase is the luxury pick: 22-momme Slipsilk with an exceptionally smooth finish and a hidden zipper. It costs the same as Blissy and wins on hand-feel; it loses on color range and care convenience.
What the evidence tells us
We do not assign numerical ratings to research reviews. Specifications alone cannot establish comfort, overnight cooling, pressure relief, or long-term durability. Compare the documented construction and fit below; any logged hands-on measurements appear in the testing record above.
- Construction
- Mulberry Silk (22 momme)
- Fit adjustment
- Fixed fill; compare the available heights and sizes before buying.
Specs at a glance
| Fill | Mulberry Silk (22 momme) |
|---|---|
| Sizes | Queen, King |
| Firmness | Soft |
| Adjustable | No |
| Washing | Hand wash cold with a silk-safe detergent preferred; delicate machine cycle in a mesh bag as a backup. Always air dry, no fabric softener. |
| Price | $89 |
| Material | 100% mulberry silk (Slipsilk) |
| Momme weight | 22 momme |
| Closure | Hidden zipper |
| Care | Hand wash or delicate machine wash, cold; air dry |
Fabric quality
Slipsilk is genuine 22-momme mulberry silk, and the finish is the differentiator — the surface is noticeably smoother and more uniform than most cases at the same momme weight, which is exactly the property that matters for friction on hair and skin.
The trade-off for that finish is pickiness: Slip's care guidance leans toward hand washing or a very gentle machine cycle, and the fabric shows water spots and pulls more readily than Blissy's if you treat it like cotton.
Hair and skin benefits
The low-friction surface is the whole point: less drag on hair cuticles overnight means less frizz and breakage, and silk's low absorbency keeps skincare on your face. Slip built its brand on dermatologist and hairstylist recommendations, and owner reports track the same direction — especially for blowout preservation and curl definition.
Care and durability
Hand washing in cold water with a silk-safe detergent is the safe route; if you machine wash, use a mesh bag on the delicate cycle. Always air dry away from direct sun, and skip fabric softener entirely. With that care, owners report two-plus years of nightly use before visible thinning.
Pros and cons
Pros
- Smoothest fabric finish in the category
- Genuine 22-momme mulberry silk
- Hidden zipper closure
- Strong reputation with dermatologists and stylists
Cons
- Tied for the most expensive case we reviewed
- Care is fussier than Blissy's
- Fewer colors and no Standard size
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Who should buy it
Beauty-first shoppers who want the softest, most refined silk surface and do not mind hand washing.
Who should skip it
Practical buyers who want machine-wash-and-done, and anyone wanting a Standard size or a specific bedding color match.
How this review was researched
We have not slept on this pillow. This review is based on manufacturer specifications and our research — published materials, dimensions, care instructions, trial and warranty terms, certifications — plus how those specs compare with pillows we know well in the same category. We do not present any of it as first-hand experience.
Comparable pillows
Slip Pure Silk Pillowcase comparisons
Final verdict
Slip is worth comparing if you want a silk pillowcase and accept its price and care requirements. We have not compared its feel firsthand with other silk cases.
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Frequently asked questions
What is Slipsilk?
Slipsilk is Slip's proprietary 22-momme mulberry silk, developed for a specific combination of shine, thickness, softness, and durability. It is real silk, not a synthetic blend.
How do you wash a Slip silk pillowcase?
Hand washing in cold water with a silk-safe detergent is recommended. A delicate machine cycle in a mesh bag works as a backup. Always air dry.
Is Slip better than Blissy?
On fabric feel, slightly. On practicality — colors, sizes, and washing convenience — Blissy wins. Both are genuine 22-momme mulberry silk at the same price, so choose by priority.
Keep reading
Sources & verification
- Product specifications: Slip
- Fabric specifications (22 momme Slipsilk): Slip
- Care instructions: Slip care instructions
- Manufacturer warranty: Slip returns policy
Last fact checked: September 2026