Published on June 19, 2026
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Buy this if you have curly, thick or coarse hair, or you're a side sleeper tired of waking up with creased skin. The Grade 6A, 22-momme silk is the real deal and OEKO-TEX certified. Skip it if you want a cheap satin dupe or need a long return window — this is a considered, premium buy.
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You wake up, look in the mirror, and your hairline's frizzed and one cheek has a pillow crease that lingers till lunch. That's what cotton does. HongKong Yanjiayu Trade builds its whole range around fixing exactly that — Grade 6A mulberry silk at a serious 22 momme weight, certified safe against your skin. Not a satin shortcut. Real silk, made to protect hair and skin while you sleep.
Most of us inherited cotton pillowcases without thinking. They tug at your hair, soak up your night cream, and press lines into your face for eight hours straight. Yanjiayu started from the opposite premise — that what touches your skin and hair all night actually matters.
The brand doesn't shout much about its origins, and that's a small frustration. What it does instead is let the material talk. Every piece is positioned around one idea: silk isn't a luxury indulgence, it's a nightly tool for hair and skin health.
If you've ever spent money on serums and bond-builders only to undo the work against a rough cotton case, you'll understand the logic. This is a brand for people who treat their pillowcase like part of their routine, not an afterthought. It's a focused, almost single-minded approach — and in a market full of "satin" knockoffs, that focus reads as confidence.
Here's where Yanjiayu earns its premium tag. Two numbers do the heavy lifting, and they're worth understanding before you spend.
First, Grade 6A. Mulberry silk is graded A through C, and 6A is the top of the A band — the longest, most uniform fibres, the brightest sheen, the smoothest hand. It's the highest standard the industry recognises. Cheaper silk products often quietly use lower grades or blend in synthetics. This doesn't.
Second, momme — pronounced "mummy" — measures density. Most budget silk lands around 16 to 19 momme. Yanjiayu uses 22. That extra weight means the fabric is more durable, holds up to repeated washing, and drapes with real substance instead of feeling flimsy.
Then there's the OEKO-TEX Standard 100 certification. That's an independent test confirming the fabric is free from harmful chemicals — no dye residues or finishing agents sitting against your skin for eight hours a night. For something you literally breathe next to, that matters more than people realise.
Put together: top-grade fibre, durable weight, certified clean. That's the trifecta you're paying for, and they're all verifiable rather than vague marketing.
The range is tight and purposeful. At its heart sit the silk bonnets and the silk pillowcases — the two products doing the most work for your hair overnight.
The bonnets come in two main styles: a 22 Momme Mulberry Silk Bonnet with a Tie Band for a custom fit, and an Adjustable Elastic version for people who want to pull it on and go. Both target the same crowd — curly, coily, thick or coarse hair that needs protecting from friction.
Then there's the 22 Momme Mulberry Silk Luxury Pillowcase, the gateway product for side sleepers and skin-first buyers. Around those anchors sit the supporting cast: silk scrunchies that won't dent or snap your hair, the 3D sleep mask for proper blackout rest, plus hair accessories and satin-lined options for those easing in at a lower price.
It's a small catalogue, but every item answers a real need. Nothing feels like filler.
The Mulberry Silk 3D Sleep Mask deserves a closer look, because it solves a problem most masks ignore. Flat masks press directly on your eyes and lashes. You blink against fabric all night, and if you've had lash extensions or wear eye cream, that's a problem.
The 3D contoured design lifts the fabric off your eyes, leaving space to blink freely while still blocking light completely. Combine that with the same Grade 6A, 22-momme silk used in the bonnets, and you get a mask that's gentle on the delicate skin around your eyes — the first place fine lines tend to show.
Most travel masks you grab at the airport are cheap polyester that traps heat and slides off by 3am. This sits in a different category. It's the kind of thing that turns a red-eye flight or a too-bright bedroom into actual rest.
If you're buying one small item to test the brand before committing to a pillowcase, this is the smart entry point. Low risk, high payoff, and you'll feel the difference the first night.
Practical stuff first, because it's where premium brands sometimes stumble. Yanjiayu processes orders within 48 hours and ships worldwide — so wherever you are, you're not waiting a week just for the parcel to leave the warehouse.
Returns and exchanges are hassle-free, but the window is seven days. That's the catch worth flagging. Many premium silk brands give you 30. Seven days means you need to unbox, try it, and decide quickly — no leaving it in the cupboard for a fortnight.
Every piece also goes through a rigorous quality check before it ships, which lines up with the Grade 6A claim. If you're ordering as a gift, factor in that short return window and order early enough to inspect it yourself first. Plan around the seven days and the experience is smooth.
This is built for a specific person. If you have curly, coily, thick or coarse hair that frizzes and breaks against cotton, the bonnets are made for you. If you're a side sleeper watching creases settle into your skin, the pillowcase is the fix.
Beauty-conscious buyers who already invest in skincare and hair products — this protects that investment overnight. It also makes a genuinely thoughtful gift.
Who should skip it? If you're after a cheap satin dupe and don't care about grade or chemical safety, your money goes further elsewhere. And if you need a generous return window or hate spending on bedding, this premium positioning won't sit right.
Yes, this is premium, and no, we won't apologise for the price — here's the reasoning. Grade 6A silk at 22 momme costs more to produce than the thin, lower-grade fabric in budget options. The OEKO-TEX certification adds testing cost too. You're paying for verifiable quality, not a label.
The current sale softens the hit nicely. Buy 2 and take 10% off, buy 3 for 15% off, or buy 4 for a full 25% off. That tiered structure rewards building a set — say a pillowcase, a bonnet, a mask and scrunchies in one order.
For a single piece, the upfront cost stings. But a 22-momme silk pillowcase outlasts cheap ones by years, so the cost-per-night drops fast. If you'll actually use it nightly, the value holds up.
HongKong Yanjiayu does one thing and does it properly: top-grade, certified mulberry silk engineered to protect your hair and skin while you sleep. The Grade 6A fibre, 22-momme weight and OEKO-TEX certification aren't marketing fluff — they're the real markers of quality silk.
Buy it if you have textured hair fighting breakage, or you're a side sleeper done with morning creases. Stack the sale by ordering a small set and the value lands. Just move quickly on the seven-day return window. For the beauty-minded sleeper who wants their pillowcase to actually work for them, this is an easy recommendation.