Article: The Best Silk Pillowcase in Australia - And Why It Matters More Than You Think
The Best Silk Pillowcase in Australia - And Why It Matters More Than You Think
Every night, your face spends eight hours pressed against a surface. That surface either works with your skin — or against it.
For most Australians, it's working against them.
Standard cotton pillowcases absorb your serums, create friction on your skin and hair, and leave you waking up with creases that, over time, deepen into something more permanent. It's one of the most overlooked factors in any skincare routine.
A high-quality mulberry silk pillowcase changes the entire equation. But — and this matters — not all silk pillowcases are the same. The difference between a silk pillowcase from a discount retailer and a 6A-grade, 22-momme mulberry silk pillowcase is the difference between the idea of silk and the actual benefit.
This guide breaks down everything: what to look for, what the numbers mean, why it's particularly important for women experiencing perimenopausal skin changes, and what makes the Souleir silk range worth your attention.
What Most People Get Wrong About Silk Pillowcases
When 3,600 Australians search "silk pillowcase Kmart" every month, they're not wrong to want silk. They're just about to make an expensive mistake — because not everything sold as a silk pillowcase actually is one.
Cheaper pillowcases labelled as silk are often polyester satin — a synthetic fabric that mimics the look but delivers none of the skin and hair benefits. Even when genuine silk is used, the quality varies enormously based on two factors most brands don't bother telling you about: silk grade and momme weight.
Understanding these two numbers is the difference between buying something that genuinely changes your skin and hair, and buying a pillowcase that looks nice but does nothing.
The Two Numbers That Actually Matter: Grade and Momme
Silk Grade — The Quality Measure Nobody Talks About
Silk is commercially graded on a scale from A to 6A, with 6A representing the highest quality available. Most brands don't mention their silk grade because most brands don't use 6A.
6A-grade mulberry silk is produced from the finest, longest silk fibres, processed to retain their natural protein structure. The result is silk that is smoother, more durable, and more consistent in quality — which directly translates to better outcomes for skin and hair.
Souleir uses 6A-grade mulberry silk exclusively. It's not listed on the tag of every product in the market. It should be.
Momme Weight — Silk's Version of Thread Count
Momme (mm) is the measure of silk fabric weight and density. The higher the momme, the more silk is woven into the fabric, and the softer, more durable, and more beneficial the result.
Here's a simple guide:
- 12–15 momme: Entry-level. Lightweight, less durable, less skin contact.
- 16–19 momme: Mid-range. Functional but not optimal.
- 20–22 momme: Premium. The sweet spot for skin and hair benefits.
- 25+ momme: Ultra-luxury. Exceptional feel, higher price point.
The Souleir silk pillowcase is 22 momme — sitting at the premium end of the range where skin and hair benefits are fully realised, without the ultra-luxury price tag that comes with 25+ momme options.
For context: Slip, one of the most recognised names in the silk pillowcase market, also sells a 22-momme pillowcase — at $115. The Souleir pillowcase delivers the same momme rating with 6A-grade silk, at $80 during the current sale.
The Real Benefits of a Silk Pillowcase for Skin and Hair
Does a silk pillowcase actually help your skin?
Yes — specifically because silk is a low-friction, non-absorbent surface. Cotton pillowcases create drag on the skin throughout the night, which contributes to sleep lines that deepen over time. Silk's smooth surface allows skin to glide rather than crease, reducing the mechanical cause of sleep wrinkles.
Additionally, cotton is highly absorbent. Every night, it draws moisture and active ingredients from your skincare routine away from your skin. Silk is naturally moisture-resistant — meaning your hyaluronic acid, retinol, and overnight treatments stay where you put them.
"I wake up less creased around my eyes, and my hair is smoother than when I used a cotton pillowcase."
— Taryn W., verified Souleir customer
Does a silk pillowcase help with wrinkles?
It helps prevent the formation of sleep creases, which over years contribute to permanent lines — particularly around the eyes, cheeks, and mouth. It doesn't reverse existing wrinkles, but it removes a nightly cause of new ones.
Is a silk pillowcase good for sensitive skin?
Silk is naturally hypoallergenic and resistant to dust mites, mould, and bacteria — making it one of the gentlest surfaces available for reactive or sensitive skin. The Souleir silk range carries OEKO-TEX certification, which independently verifies the fabric has been tested and is free from harmful substances. For anyone with skin sensitivity, this is the certification that matters.
"One side of my face is very sensitive to regular pillow cases. I find sleeping on these silk pillowcases is very comfortable and a relief for my situation."
— Agnes C., verified Souleir customer
What does silk do for hair?
Cotton creates friction that roughens the hair cuticle overnight, leading to frizz, breakage, and split ends — particularly damaging for coloured, fine, or already-fragile hair. Silk allows hair to move across the surface without resistance, preserving the cuticle and reducing breakage. Lab testing shows silk reduces hair friction by 34% compared to cotton — a measurable difference that shows up in less breakage, less frizz, and better hair condition over time.
"Such a great product — the silk is so soft and can't stop touching it. Have seen massive improvement already to my skin and hair."
— Verified Souleir customer
Why Silk Matters More in Perimenopause
This section is for the women who already know their skin has changed — and haven't found a skincare conversation that speaks to it honestly.
Perimenopause typically begins in the mid-to-late 40s, though it can start earlier. As oestrogen levels decline, the skin undergoes several measurable changes that most pillowcases — and most skincare brands — don't account for:
Skin dehydration and thinning. Oestrogen plays a significant role in collagen production and moisture retention. As it declines, the skin becomes drier, thinner, and more reactive. A cotton pillowcase that absorbs moisture overnight accelerates this dryness in a way that a silk surface does not.
Increased skin sensitivity. The hormonal fluctuations of perimenopause commonly cause skin to become more reactive — more prone to redness, irritation, and sensitivity to fabrics, temperatures, and products. Silk's smooth, hypoallergenic surface reduces friction-related irritation at a time when skin can least tolerate it.
Hot flashes and night sweats. Silk's natural temperature-regulating properties make it more comfortable during the night sweats that accompany perimenopausal hormonal shifts. Unlike synthetic fabrics that trap heat, silk breathes — adjusting to body temperature rather than adding to it.
Hair thinning and fragility. Declining oestrogen also affects hair density and tensile strength. Hair becomes finer and more prone to breakage. The friction created by a cotton pillowcase — which is negligible for thick, healthy hair — becomes genuinely damaging for hair already under hormonal stress.
A 6A-grade, 22-momme silk pillowcase addresses all four of these changes simultaneously. It doesn't require a new product, an additional step, or a change in routine. It replaces something you're already using every night.
Free shipping Australia-wide. 30-day money-back guarantee.
Silk vs Cotton vs Satin — Honest Comparison
| Souleir Mulberry Silk | Cotton | Polyester Satin | |
|---|---|---|---|
| Friction on skin | Very low | High | Low (synthetic) |
| Absorbs skincare | No | Yes | No |
| Hair breakage | Minimal | High | Low (synthetic) |
| Hypoallergenic | Yes (OEKO-TEX) | Variable | No |
| Temperature regulation | Natural | Moderate | Poor |
| Durability | High (22 momme) | High | Low |
| Genuine silk | Yes (6A-grade) | N/A | No |
The key distinction in the satin column is worth noting:
polyester satin mimics some of silk's low-friction properties but contains none of the natural protein structure that makes genuine silk beneficial for skin and hair. It also tends to pill quickly, trap heat, and degrade with washing.
The Disadvantages of Silk Pillowcases — Addressed Honestly
Any brand that tells you silk pillowcases have no downsides is trying to sell you something. Here are the real considerations:
They cost more than cotton.
True. A quality silk pillowcase represents a higher upfront investment than a cotton one. The counterargument is that 22-momme mulberry silk lasts for years when cared for correctly, and the cumulative benefit to your skin and hair has a real-world value that a $20 cotton pillowcase doesn't deliver.
They require more careful washing.
Also true. Silk should be hand-washed or machine-washed on a delicate cycle in cool water with a gentle, pH-neutral detergent. It should not be tumble-dried. This is a minor inconvenience for most people — and a reasonable trade-off given what the fabric delivers.
They can feel slippery at first.
This is the most common adjustment. If you've slept on cotton your whole life, the low-friction surface of silk takes a night or two to feel normal. Most people stop noticing within a week.
They need to be stored away from direct sunlight.
Prolonged UV exposure can degrade silk fibres over time. Store your pillowcase in a cool, dry place when not in use.
None of these are dealbreakers. They're maintenance considerations for a premium product — the same ones that apply to any quality textile investment.
The Souleir Silk Range — Built for Australian Skin
Souleir was built at the intersection of evidence-based skincare and luxury textiles. The silk range exists because the best results happen when the environment that touches your skin overnight is optimised for recovery — not working against it.
Every silk product in the range is made from 6A-grade, 22-momme 100% mulberry silk, independently certified by OEKO-TEX, and available in three colours:
- Rose Gold,
- Graphite, and
- Soft Champagne.
- Silk Pillowcase — $80 AUD (sale from $120) — the foundation piece for overnight skin and hair care
- Silk Sleep Mask — $70 AUD (sale from $95) — full blackout, silk on every surface including the inner lining
- Sleep Mask + Pillowcase Gift Set — $139 AUD (sale from $150) — the complete overnight skin environment
- 2x Pillowcase Bundle — $149 AUD (sale from $160) — for a full refresh, or one for you and one for your partner
- Men's Silk Pillowcase — $80 AUD (sale from $120) — same 6A-grade silk, designed for scalp and hair health
"The silk sleep mask is so soft, it feels like a cloud is covering my eyes. I'm really impressed that the padding is silk also."
— Taryn W., verified Souleir customer
All orders ship free Australia-wide. 30-day money-back guarantee on all silk products.
Frequently Asked Questions
What is the best silk pillowcase in Australia?
The best silk pillowcase is one that uses 100% mulberry silk at 22 momme or above, from a certified source. Look for OEKO-TEX certification as confirmation that the fabric has been independently tested and is free from harmful substances. The Souleir silk pillowcase uses 6A-grade, 22-momme mulberry silk — the highest grade commercially available — and carries OEKO-TEX certification.
What momme is best for a silk pillowcase?
For skin and hair benefits, 20–22 momme is the optimal range. Below 19 momme, the fabric is lighter and less durable. Above 25 momme, you're in ultra-luxury territory with a significant price premium. 22 momme delivers the full range of skin and hair benefits at a price point that makes sense for everyday use.
Is a silk pillowcase worth it for sensitive skin?
Yes — particularly for skin that is reactive, acne-prone, or experiencing hormonal sensitivity. Silk is naturally hypoallergenic, non-absorbent, and low-friction. For anyone whose skin is irritated by standard cotton, the switch to silk is one of the simplest and most effective environmental changes you can make.
Does a silk pillowcase help with perimenopause skin?
Yes. The skin changes associated with perimenopause — increased dryness, sensitivity, thinning, and reactivity — are all directly addressed by sleeping on a silk surface. Silk does not absorb moisture or skincare products, reduces friction on already-fragile skin and hair, and regulates temperature more effectively than synthetic alternatives during night sweats.
What is the difference between silk and satin pillowcases?
Silk is a natural fibre produced by silkworms. Satin is a weave pattern that can be applied to any fibre — most commonly polyester. Polyester satin mimics some of silk's low-friction properties but contains none of the natural proteins that make silk beneficial for skin and hair. It also traps heat, degrades faster, and is not hypoallergenic.
How do I wash a silk pillowcase?
Hand-wash or machine-wash on a gentle/delicate cycle in cool water using a pH-neutral, silk-safe detergent. Do not tumble dry — lay flat or hang to air dry away from direct sunlight. Do not wring or twist the fabric.
What is 6A-grade silk?
Silk is commercially graded from A to 6A based on fibre quality, length, and consistency. 6A is the highest grade available, produced from the finest, longest fibres with the most consistent quality. Most silk products on the market do not specify their grade. When a brand does specify 6A, it's a meaningful quality indicator.
Souleir silk products carry a 30-day money-back guarantee. OEKO-TEX certified.
Written by Therese Cassar
