Not all silk is created equal
There's silk, and then there's 100% mulberry silk. The difference matters more than most people realise. It affects how the fabric feels, how long it lasts, what it does for your skin and hair overnight, and whether it's worth the investment at all.
Mulberry silk is the highest grade silk available. It's produced by silkworms that feed exclusively on the leaves of the mulberry tree. That single-source diet results in fibres that are longer, finer, more uniform, and more lustrous than any other silk type. No shortcuts. No blending. Just the real thing.
If you've ever slept on a silk pillowcase and wondered why the hype exists, or if you're considering one for the first time, this is everything you need to know.
7 genuine benefits of sleeping on mulberry silk
1. Smoother skin while you sleep
Every time you roll over on a cotton pillowcase, friction drags on your skin cells. Over time, this contributes to fine lines and sleep creases that become harder to shake as skin loses elasticity. Silk's naturally smooth surface lets your skin glide rather than pull. Less friction overnight means fewer sleep lines in the morning, and less stress on skin that's already working hard to repair itself.
2. Keeps your skincare working overnight
You've spent money on a good night cream. Don't let your pillowcase absorb it. Cotton is an absorbent fabric by nature, which means it wicks moisture and product away from your face as you sleep. Silk doesn't. The proteins in its fibres are non-absorbent, so your serums and moisturisers stay on your skin where they belong, not soaked into the fabric.
3. Contains 18 skin-loving amino acids
Mulberry silk is composed of two proteins: fibroin and sericin. Together they carry 18 amino acids that are structurally close to those found naturally in human skin. These compounds help support cellular regeneration and moisture retention. It's not a miracle cure, but it's genuine biology that no synthetic fabric can replicate. Think of it as passive skincare that works while you do nothing.
4. Better hair every morning
Hair and cotton are a bad combination. Cotton fibres are rough at a microscopic level, and they catch hair as you sleep, causing friction, breakage, split ends, and the dreaded morning frizz. Silk eliminates that friction. Your hair glides across the surface rather than snagging, which means you wake up with less frizz, less tangling, and your blow-out or hair styling lasting noticeably longer.
5. Naturally hypoallergenic
Silk is naturally resistant to dust mites, mould, fungus and bacteria. These are among the most common triggers for skin irritation, congestion and allergy symptoms during sleep. Because mulberry silk is processed without harsh chemicals, and its tightly woven long fibres create a surface microbes struggle to cling to, it's a cleaner sleeping environment from the start.
6. Temperature regulating all year round
Silk is a natural thermoregulator. In warm weather, its breathable structure allows heat to escape and moisture to evaporate, keeping you cool without the clammy feeling you get from polyester or blended fabrics. In cooler months, the same structure traps a thin insulating layer of air close to your skin, retaining warmth without overheating.
7. Naturally antimicrobial and easy to keep clean
Silk contains sericin, a natural protein gum that acts as an antimicrobial agent. Unlike cotton and wool, which can harbour bacteria and mildew if not washed frequently, silk naturally resists the microbial growth that causes odour and fabric degradation. This means your pillowcase stays fresher for longer between washes.
Mulberry silk vs. cotton vs. bamboo
It's a fair question. Cotton is familiar and affordable. Bamboo is marketed as natural and eco-friendly. Here's how the three fabrics compare on the things that matter for sleep and skin.
| Property | Mulberry Silk | Cotton | Bamboo |
|---|---|---|---|
| Low friction surface | ✓ | ✗ | ~ |
| Moisture retention (non-absorbent) | ✓ | ✗ | ✗ |
| Naturally hypoallergenic | ✓ | ~ | ~ |
| Temperature regulating | ✓ | ~ | ✓ |
| Amino acids for skin | ✓ | ✗ | ✗ |
| Dust mite resistant | ✓ | ✗ | ~ |
| Antimicrobial | ✓ | ✗ | ~ |
| Reduces hair frizz and breakage | ✓ | ✗ | ~ |
✓ Yes ✗ No ~ Partial or dependent on product grade
"Cotton absorbs moisture away from your skin as you sleep. Silk doesn't. That one difference is why your night cream, your skin's natural oils, and your hair's moisture all perform better when you switch."
Who benefits most from silk pillowcases?
Silk isn't just a luxury. For certain skin and scalp conditions, it can make a meaningful difference.
Silk's smooth, chemical-free surface avoids the abrasion and allergens that commonly trigger flare-ups. It won't strip the skin barrier the way rougher fabrics can.
The hypoallergenic, non-irritating surface of silk reduces overnight contact triggers. Many dermatologists recommend silk bedding for eczema sufferers as a first-line environmental adjustment.
Heat and friction are two known rosacea triggers. Silk's temperature-regulating properties and near-zero friction surface help to minimise both during the hours your skin is trying to recover.
Cotton pillowcases harbour bacteria and absorb the oils from your skin and hair products, then transfer them back to your face. Silk's antimicrobial surface and low-absorption properties reduce this cycle significantly.
As skin loses elasticity with age, sleep creases take longer to fade and can become permanent. Silk reduces overnight friction, which is one of the simplest environmental adjustments for slowing visible skin ageing.
Friction from cotton causes mechanical breakage at the hair shaft, making thinning hair appear worse over time. Silk eliminates that friction, helping fragile hair stay on your head rather than on your pillow.
What to look for when buying silk bedding
Not everything labelled silk delivers what it promises. Here's how to shop with confidence.
Understand momme weight
Momme (mm) is the measure of silk fabric density. A higher momme means more silk threads per square inch, which translates to a heavier, more durable weave. Here's a quick guide:
Check the label for 100% mulberry silk
Products labelled simply "silk" or "natural silk" may be blended with polyester or other fabrics. Always look for "100% mulberry silk" specifically. This tells you the silkworms were fed only mulberry leaves, producing the finest, most uniform fibres available.
Look for an envelope or zip closure
This is purely practical. An envelope closure keeps the pillow securely inside and avoids unnecessary stress on the silk at the opening. Hidden zip closures are the most secure option if you move around a lot during sleep.
Size matters more than you think
A pillowcase that's too small will stretch over your pillow, which creates tension in the weave and shortens the fabric's lifespan. The Urban Oasis Silk Pillowcase is sized at 48 x 73cm, which fits standard Australian pillows properly without excess fabric bunching at the sides.
How to care for your silk pillowcase
Silk is more durable than most people think, as long as you treat it correctly. Follow these steps and your pillowcase will stay soft and lustrous for years.
Wash in cool or lukewarm water only
Hot water weakens silk proteins and causes shrinkage. Use cool water (max 30°C) for hand washing, or the delicate/silk cycle on your machine at 30°C or below.
Use a gentle, pH-neutral detergent
Avoid standard detergents, bleach, and fabric softeners. These contain enzymes and chemicals that break down silk fibres over time. A silk-specific or gentle wool wash is ideal.
Machine wash in a mesh laundry bag
If using the machine, place your pillowcase in a mesh laundry bag before washing. This protects the fabric from snagging on other items and reduces mechanical agitation on the delicate fibres.
Never tumble dry
The heat in a dryer will permanently damage silk fibres. After washing, gently press (don't wring) excess water out, then lay flat on a clean towel or hang to dry in a shaded spot away from direct sunlight.
Iron on the lowest setting, inside out
If your pillowcase needs pressing, turn it inside out and use the lowest heat setting with no steam. A cool iron on the reverse side removes creases without damaging the sheen on the face of the fabric.
Store away from direct light
Prolonged exposure to direct sunlight can yellow and weaken silk fibres over time. Store your pillowcase in a cool, dark drawer when not in use, ideally in a fabric pouch or cotton bag rather than plastic.
Try it for yourself
The Urban Oasis Silk Pillowcase is made from 100% mulberry silk and sized for standard Australian pillows. Available in four whisper-soft shades: White, Chalk, Blush and Reef.
Urban Oasis Collection
Silk Pillowcase White
100% mulberry silk. 48 x 73cm. A clean, timeless white that pairs with any bedroom palette.
Urban Oasis Collection
Silk Pillowcase Chalk
100% mulberry silk. 48 x 73cm. A warm off-white with a powdery softness that suits neutral bedroom palettes.
Urban Oasis Collection
Silk Pillowcase Blush
100% mulberry silk. 48 x 73cm. A gentle rose tone that adds warmth without overpowering the room.
Urban Oasis Collection
Silk Pillowcase Reef
100% mulberry silk. 48 x 73cm. A soft muted tone that brings calm to any sleep space.
Common questions about mulberry silk
What is 100% mulberry silk?
Is mulberry silk good for your skin?
Does sleeping on silk really help your hair?
Is mulberry silk hypoallergenic?
How do I wash a mulberry silk pillowcase?
What is momme weight in silk?
Is mulberry silk worth the price?
Can I use a silk pillowcase with hair extensions or lash extensions?
Ready to upgrade your sleep?
Shop the Urban Oasis Silk Pillowcase range. 100% mulberry silk. Made for your skin, your hair, and a genuinely better night's rest.
Shop Silk Pillowcases