What Is Mulberry Silk? What Makes It Special and Is It Worth It?
Mulberry silk is a premium, natural silk fiber from Bombyx mori silkworms fed on mulberry leaves. Learn how mulberry silk is made, its unique features, pros, cons, and care tips.
In this guide
Mulberry silk is a natural fiber spun by Bombyx mori silkworms raised on mulberry leaves. It is the highest quality silk used in clothing and bedding, valued for its smoothness, glossy appearance, strength, and comfort. Mulberry silk stands out for its pure white color, long, uniform fibers, and gentle touch against skin, making it the most luxurious choice among silk types.
Understanding what mulberry silk is—and why it’s different from other silks—helps shoppers gauge its value for clothing, bedding, and accessories.
Key takeaways
- Mulberry silk comes from Bombyx mori silkworms fed only mulberry leaves, ensuring purity and strength.
- It’s softer, smoother, and stronger than wild silks, with a subtle shine and high comfort.
- Gentle care is vital—cool water, mild detergent, no soaking, and dry away from sunlight.
- Silk is best for luxury bedding and fine clothing but needs gentle washing and can be expensive.
- Wild silks are rougher, less uniform, and more matte, making mulberry silk the premier option.
What is mulberry silk made of?
Mulberry silk is made from the continuous filament unwound from the cocoon of the Bombyx mori silkworm. These silkworms are domesticated and raised exclusively on a diet of mulberry leaves, producing long, smooth, naturally white fibers—sometimes reaching a single length of over 1,000 meters. The process, known as reeling, keeps much of the filament intact, yielding the highest grade of silk fiber. In contrast, wild silks use broken, shorter fibers and vary in color and feel.
How mulberry silk is made
Problem
Raw cocoon becomes finished silk fabric
Why it happens
- Silkworm eats only mulberry leaves
- Spins a continuous white cocoon
- Cocoon is carefully unwound
What fixes it
- Yields pure, long silk filament
- Reeled silk is spun to thread
- Woven or knit into smooth, strong fabric
How mulberry silk feels and looks
Mulberry silk is known for its exceptional smoothness and gentle luster. It feels cool to the touch and drapes in soft folds, conforming comfortably to body contours. Its natural sheen comes from the triangular structure of the fiber, which reflects light softly but brightly. Mulberry silk is feather-light but surprisingly strong, and almost entirely free from nubs and roughness that can mar the feel of lower-grade silks or blends.
The white base color of mulberry silk allows for vivid, clear dyeing. If you compare two scarves—one mulberry, one wild silk—mulberry will almost always look glossier, smoother, and more luminous when dyed in rich colors. This distinctive look is a key reason it’s used for premium blouses, scarves, lingerie, and bedding, where both comfort and visual appeal matter most.
Fabric weight (GSM)
What is mulberry silk vs other silk? Is it better?
Mulberry silk is widely accepted as the finest silk available, setting the benchmark for all other silk types. This is due to:
- Super-long, continuous fibers, resulting in an unmatched smoothness
- Purer, brighter white color, without the yellows or browns of wild silk
- Low slub (bump) content, delivering a clean, uniform surface
- Stronger fiber, allowing finer and lighter weaves
In comparison, wild silks like Tussah or Eri come from silkworms eating a natural diet and spinning in uncontrolled conditions. As a result, their fibers are shorter, often colored, and are typically less uniform. These are mainly used in rustic textiles or crafts, lacking the softness and shine of mulberry silk—although they can offer a unique texture for those who prefer something more matte and textured.
| Silk Type | Color | Fiber Length | Surface | Main Uses |
|---|---|---|---|---|
| Mulberry silk | White | Up to 1,500 m | Smooth, lustrous | Luxury clothing, bedding |
| Tussah silk | Yellow/tan | Shorter, broken | Coarser, matte | Scarves, rustic fabric |
| Eri silk | Cream/gray | Shorter | Softer, matte | Eco-textiles, shawls |
Another type—spun silk—is made from shorter fibers, often from broken cocoons or waste, and feels less smooth and strong than reel (filament) silk. It’s more affordable but will lack the signature luster and feel of pure mulberry filament silk.
Mulberry silk vs wild silk at a glance
Our rating, 1–5, higher is betterReal-life performance of mulberry silk
Mulberry silk balances a rich, soft texture with lightweight strength. Here’s what you can expect from genuine mulberry silk fabric:
- Comfort year-round: Silk regulates body temperature and wicks excess moisture, staying cool and dry
- Doesn’t cling: Natural resistance to static and smoothness prevent silk from sticking to the skin
- Bright colors: Pure white base makes colors vibrant in dyed fabric
- Wrinkle resistance: More resistant than linen or cotton, especially if hung properly after washing
Yet, silk is sensitive to rough wear, harsh chemicals, and prolonged sun exposure, which can reduce its sheen, weaken fibers, and cause yellowing over time. Silk has moderate natural elasticity—between that of cotton and wool—so it can spring back after gentle stretching, but will crease if crushed for long periods (such as sleeping on a wrinkled pillowcase). Silk does not pill easily, since its filaments are so long and smooth, and won’t trap dust or lint as much as cotton or synthetics.
Mulberry silk in bedding: What to expect
Silk bedding—especially pillowcases—has become a popular choice for hair and sensitive skin. Mulberry silk helps keep skin hydrated and reduces friction, supporting smoother hair and less facial creasing than cotton or polyester pillowcases. Some users notice improved sleep comfort in hot or humid climates because silk helps wick away moisture and remains cool to the touch. On the downside, silk sheets can slip more easily than cotton, so choose fitted options and avoid rough handling to prevent snags.
Due to its strength and minimal linting, mulberry silk bedding lasts longer than most wild silk options if washed with care. For allergy-prone users, silk is often recommended for its resistance to dust mites and its low residue of pesticides or chemicals compared to some synthetic blends.
Mulberry silk in bedding (industry knowledge)
Our rating, 1–5, higher is better- Smoothness5/5
- Breathability5/5
- Durability4/5
- Pilling resistance5/5
Mulberry silk: Pros and cons
Pros
- Unmatched softness, ideal for skin and hair
- Natural shine and drape suited to luxury apparel and bedding
- Breathable and helps regulate sleeping temperature
- Low allergen content, often a good choice for sensitive skin
- Strong for such a fine fiber, supporting both light and more substantial weaves
- Vivid dye colors due to the naturally pure fiber
- Minimal static build-up compared to synthetics
Cons
- Higher cost, reflecting labor and quality
- Delicate when wet—abrasion or wringing can damage fibers
- Weakened by long sunlight exposure and prone to staining by sweat or oils
- Needs careful, gentle washing—no harsh detergents, warmth, or tumble drying
- Slipperiness can make some garments or bedding shift out of place
- Limited suitability for daily-wear items that require frequent washing
How to care for mulberry silk
Caring for mulberry silk means using the mildest methods to prevent loss of luster, shape, or strength. Always wash by hand (or choose a true silk cycle on your machine with a mesh bag). Use cool water—never hot—and pH-neutral detergent. Do not wring, soak for long, or scrub. Instead, rinse briefly and remove excess water by patting in a towel. Hang or lay flat to dry, out of direct sunlight to prevent fading or yellowing.
Washing mulberry silk, step by step
- Fill a basin with cool (30 °C) water and mild, pH-neutral detergent.
- Turn garment inside out for protection.
- Gently agitate without soaking or scrubbing; wash for a few minutes only.
- Rinse promptly, then press (don’t wring) water out.
- Wrap in a towel to absorb moisture; lay flat or hang to dry indoors, away from sunlight.
Best care settings for most mulberry silk
Avoid harsh detergents, bleach, or fabric softeners, which can damage silk protein fibers. Iron only if absolutely needed, and use the lowest (Silk/1-dot) setting. For wrinkles, hanging the item in a steamy bathroom often helps—direct hot irons or steamers can degrade the fiber if held too long. Stains from sweat or oils are best treated right away with a gentle dabbing motion and mild soap. If unsure, professional cleaning protects silk’s lifespan.
Why silk loses its sheen
Problem
Faded or dull silk fabric
Why it happens
- Too-hot water or ironing
- Sunlight exposure
- Harsh detergents
What fixes it
- Use cool/30°C water
- Dry and store out of sunlight
- Choose pH-neutral detergent
Does mulberry silk shrink?
Silk—especially high-quality filament silk like mulberry—has less natural tendency to shrink than spun or wild silks, but still must be treated gently. Hot water, agitation, or tumble drying increase the risk of shrinkage and fabric distortion. Evidence from our in-house testing of other fibers shows that tumble drying leads to higher failure rates for shrinkage than line drying. Always use cool water and avoid the dryer to keep silk in its best shape. For more on shrinkage and garment sizing, see how we test.
Why silk shrinks
Problem
Silk garment smaller after wash
Why it happens
- Heat causes fiber to contract
- Rough agitation breaks filament alignment
- Tumble drying agitates and heats
What fixes it
- Hand wash in cool water
- Use minimum agitation
- Always air dry, never tumble
Who should choose mulberry silk?
Mulberry silk is best for those seeking top-level comfort, drape, and smoothness for their skin and hair, especially in:
- Luxury bedding and silk pillowcases
- Fine scarves, blouses, and dresses
- People with sensitive skin or allergies—silk resists dust mites and many irritants
- Special-occasion garments and accessories where drape and shine are key
If you want easy-wash, durable daily-wear fabric, silk may require too much care—consider options like modal instead. For more choices, explore our complete fabric guide.
Mulberry silk: quick answers
Is mulberry silk natural or synthetic?
Mulberry silk is a 100% natural protein fiber produced by silkworms fed on mulberry leaves.
What makes mulberry silk higher quality than other silks?
Its controlled production yields longer, purer, and more uniform filaments, resulting in superior smoothness, shine, and strength.
Can mulberry silk be washed at home?
Most mulberry silk can be hand-washed in cool water with gentle detergent; check the garment’s care label, as some require dry cleaning due to their dyes or finishes.
Is mulberry silk hypoallergenic?
Yes. Most people find mulberry silk resists dust mites and many common irritants, making it a popular bedding choice for allergy-prone users.
Does silk wrinkle, shrink, or pill?
Silk resists pilling and is less wrinkle-prone than linen, but will crease and lose shape if washed roughly or dried in a machine.
How long does mulberry silk last?
With gentle washing, protection from sunlight, and careful handling, quality mulberry silk can last many years.
Is mulberry silk cruelty free?
Traditional mulberry silk harvesting kills the silkworm during reeling, but “peace silk” or “Ahimsa silk” options let the moth escape before processing; always check product labels for animal welfare information.
How this guide was researched
This page is based on industry standards, fiber science, and my own textile engineering experience since 2012. Our FACTS sheet has no test results specific to silk fabric, so no lab or production data is presented here. For more detail on our process and lab testing, see how we test.
Kamrul Islam
Kamrul Islam is a textile engineer who has worked in industrial fabric dyeing and development since 2012. He studied wet processing (dyeing) at the University of Chittagong, ran dyeing production, and has headed dyeing and fabric development since 2017 — recipes, shade approval and functional finishes. He writes here so shoppers can understand fabrics the way the people who make…