How to Check if Silk Sheets Are 100% Mulberry Silk | Promeed

Most silk sheets sold online are imitations. A few simple checks—no flame needed—can tell you if yours is 100% mulberry silk. Here’s how to verify authenticity.

Last updated: June 21, 2026 · By: Kelly Eleanor

Let’s cut through the noise: genuine mulberry silk isn’t just a label—it’s a material you can verify with a few simple, no‑flame tests. Here’s exactly what to look for and why Promeed’s standards remove the guesswork. As urban professionals, we already face city pollution and daily stress—bedding that breathes and cares for your skin makes a real difference.

The difference between authentic mulberry silk and synthetic alternatives matters immensely for your sleep quality and skin health. Genuine mulberry silk, harvested from Bombyx mori silkworms fed exclusively on mulberry leaves, offers natural breathability, hypoallergenic properties, and a smoothness that helps reduce friction on hair and skin. At Promeed, our sheet sets use 6A+ long-strand mulberry silk to deliver a pure, high-performance sleep experience. In this guide, we’ll walk you through simple checks to verify silk authenticity so you can invest with confidence.

The Real Difference: What 100% Mulberry Silk Is (and Isn’t)

Before you can verify if a silk sheet is genuine, it helps to know what authentic mulberry silk really is. Mulberry silk comes from the cocoons of the domesticated Bombyx mori silkworm, which is fed a strict diet of mulberry leaves. This diet produces the longest, finest, most uniform silk fibers available. Wild silks like Tussah have shorter, coarser strands and often a darker natural color. Synthetic 'silk' is almost always polyester or a blend that mimics the sheen but lacks silk's natural properties. Polyester fabrics tend to pill, trap heat, generate static, and may be more irritating to skin sensitive to environmental factors—a concern for those living with city air pollution.

Mulberry silk is a natural protein fiber, known for being hypoallergenic and naturally resistant to dust mites. Its inherent thermo-regulating quality helps maintain a comfortable temperature throughout the night. When you touch genuine mulberry silk, it warms quickly to your skin and offers a soft, smooth surface that can help minimize friction. The weight, subtle sheen, and breathability are difficult to replicate, which is why we select only 6A+ grade silk.

The Label Check: Reading Specifications Like a Pro

One reliable way to check authenticity is right on the label or product page. Reputable brands state '100% mulberry silk' (or at minimum '100% silk') with verifiable details. Look beyond the marketing language: does the seller specify the momme weight? Momme (pronounced 'mohm') measures silk's density; a higher momme generally indicates a thicker, more durable fabric. For sheets, anything below 22 momme is often too light for daily use. Promeed's standard is 23 momme—a balance of plushness and breathability—and our premium sets reach 30 momme for a hotel-grade feel.

You should also be able to find the grade. Silk is graded from A to 6A, with 6A being the highest—long, unbroken strands, minimal impurities, and a uniform surface. Many brands claim 'grade A' without specifying further; we label our silk as 6A+ because it exceeds even the top tier. When you browse our 23mm 6A+ mulberry silk flat sheet set, every specification is transparent. If a listing only says 'silk' without momme or grade, proceed with caution. A low price often indicates a blend, which can compromise silk's natural benefits.

Hands-On Tests You Can Do at Home

Even with a perfect label, you might still want physical proof. Here are a few simple tests you can perform once you have the fabric in hand (though we recommend them for vetting unknown brands, not for damaging your new Promeed sheets).

Test	Real Mulberry Silk	Fake / Polyester Silk
Burn Test	Burns slowly, smells like burning hair, leaves brittle ash that crumbles	Melts and shrinks from flame, smells like burning plastic, hard bead residue
Touch & Warmth	Instantly warms to your skin, feels soft and cushiony, not slippery; slight friction when running hand over it	Feels cool or excessively slippery, may generate static, uniform slickness
Water Absorption	Absorbs water quickly; a drop of water will spread and soak in within seconds	Water beads up and rolls off or takes a long time to absorb
Sound	Produces a subtle, soft rustle when rubbed between fingers	Often crackles with static or sounds like crinkling plastic
Sheen	Has a pearlescent, multidimensional luster that changes with the light	Uniform, shiny plastic-like glare; appears overly glossy from all angles

While these tests can help, they may damage the fabric—especially the burn test. That’s why we encourage choosing a brand that offers a satisfaction guarantee and full material disclosure. With Promeed, you can experience the difference without guesswork.

Why Certifications and Brand Integrity Are Non-Negotiable

Beyond physical tests, third-party certification is a reliable safeguard. OEKO‑TEX® Standard 100 verifies that every component—from fabric to thread to zipper—is free from harmful substances. For those already managing city air and skincare routines, this certification ensures your bedding isn't introducing additional irritants. All Promeed silk sheets are OEKO‑TEX® certified, so your sleep environment stays clean.

Equally important is brand transparency. A company that stands behind its products will share sourcing details. We work directly with sericulture cooperatives that have raised silkworms for generations, using only long-strand cocoons, which allows us to guarantee 6A+ grade and 100% mulberry content. When shopping, ask brands where their silk is grown and how workers are treated. A trustworthy brand will answer openly. Browse our entire bed sheets collection to see detailed information on our materials.

From Suspicion to Sanctuary: Why Our Sheets Eliminate the Guesswork

We founded Promeed to solve a common frustration: luxury bedding that doesn't deliver. You want the skin-preserving, hair-smoothing benefits that high-end silk brands promise, but without the steep markup. Our 30mm 6A+ 100% mulberry silk flat sheet set offers substantial weight and durability, crafted to fit a smart luxury budget. It comes as a complete 4-piece set: a flat sheet, a fitted sheet (with deep pockets for mattresses up to 16 inches), and two pillowcases with hidden zipper closures to minimize contact with metal or plastic. If you’re thinking about layering both a flat and a fitted sheet, understand the benefits of flat vs fitted silk sheets.

Because it's crafted from 100% mulberry silk, you may notice immediate benefits: the fabric breathes and wicks moisture to help regulate temperature, which can be especially welcome in city apartments prone to stuffiness. Many users find their morning skin shows fewer sleep creases and their hair is smoother with less breakage. Silk's natural resistance to dust mites and allergens also makes it a considerate choice for sensitive sleepers. For a streamlined look, our 30mm fitted sheet set offers the same thickness without the top sheet, perfect for modern minimalist bedrooms.

We offer detailed product pages, transparent specifications, and OEKO‑TEX certification so you can feel confident in your purchase. No need to perform burn tests—just enjoy the quiet luxury of a material prized for centuries, now made accessible for the modern professional. To create your own urban sanctuary, explore our silk sheet sets and experience the comfort of genuine mulberry silk.

Experience Certified 6A+ Mulberry Silk — Shop the 30mm Set

Caring for Genuine Mulberry Silk: Preserving Quality Long‑Term

Once you’ve confirmed your sheets are the real deal, preservation matters. Proper care not only extends the life of your silk but also keeps its signature softness, breathability, and natural sheen intact. Unlike polyester, genuine silk responds to gentle treatment, and mishandling can degrade the fiber’s structure—eventually making it feel thinner or duller.

Washing and Drying Guidelines

• Hand‑wash or use a mesh bag: Silk fibres are delicate; machine‑washing on a gentle cycle inside a protective mesh bag minimises abrasion. Better still, hand‑wash in cool water using a pH‑neutral detergent specifically formulated for silk.
• Avoid bleach and fabric softeners: Harsh chemicals can strip the sericin (silk gum) that gives mulberry silk its unique hand‑feel. Optical brighteners can also yellow the fabric over time.
• Air‑dry only: Never tumble‑dry silk. Lay flat on a clean towel, roll gently to remove excess water, then air‑dry away from direct sunlight or radiators. Heat damage can shrink and stiffen the fibres.

Storage and Daily Habits

• Store in a breathable cotton bag: Silk needs to breathe. Avoid plastic storage that traps moisture and encourages mildew. A cotton pillowcase works well as a dust‑proof cover.
• Rotate your sets: Having two sheet sets not only extends each one’s lifespan but also simplifies laundry days. For more on how flat and fitted styles complement each other, see our guide on Flat Sheet vs Fitted Sheet: Why You Need Both for Perfect Silk Bedding.

Silk Protein and Skin Comfort Guide

Mulberry silk's protein-based structure contributes directly to the skin and hair benefits many sleepers seek. The long, smooth fibres create a low-friction surface that can reduce nighttime tugging, helping retain moisture and preventing sleep creases. Here’s how to evaluate comfort in your everyday use.

How to Judge Everyday Comfort

Look at fabric smoothness, momme weight, breathability, and care routine together so the material feels gentle night after night without becoming difficult to maintain. Heavier momme silk, like 30mm, feels more substantial and insulates slightly more, while 23mm remains airier—both excel for different sleep preferences. Promeed offers both, so you can match your bedding to your comfort needs.

Feature	23mm 6A+ Silk	30mm 6A+ Silk
Weight & Feel	Light and airy, ideal for warmer sleepers	Plush and substantial, hotel-grade thickness
Durability	Excellent for daily use, holds shape well	Extra long lifespan due to heavier weight
Breathability	Slightly more breathable	Excellent breathability with more warmth
Best For	Year-round comfort, warmer climates	Winter luxury, those who prefer heavier sheets

No matter which you choose, both sets are crafted from 100% mulberry silk and undergo rigorous quality checks. Explore the 23mm silk flat sheet set for a breathable everyday sleep, or upgrade to 30mm 6A+ sheets for a weightier, ultra-luxury experience.

Silk Sheet Authenticity FAQ

Shop the 30mm 6A+ Silk Flat Sheets Set

References

• FTC Textile and Wool Labeling Guidance – Official rules for textile fiber identification.
• OEKO‑TEX® Standard 100 – Independent certification for harmful substance testing.

Next step

When the fit feels clear, use the next step below to review the most relevant Promeed option.

See the recommended 30mm 6A+ 100% Mulberry Silk Flat Sheets Set 4pcs