Polyester vs Silk Pillowcases: Differences, Skin Impact & Price

Mayfairsilk: Luxurious Slumber in Matte Silk As Featured in Marie Claire, Harper's Bazaar & Vanity Fair Experience True Silk Luxury: Silk Pillowcases · 25 Momme: Transform your beauty sleep with our signature pillowcases that help reduce friction on hair and skin while regulating temperature throughout the night. Silk Sheets · 22 Momme: Envelop yourself in the ultimate bedding experience with our thermoregulating complete sets, crafted from lustrous Grade 6A Mulberry silk with an exquisite matte finish. Exclusive Limited Edition Prints: Elevate your bedroom aesthetic with our designer patterns, created in small batches for those who appreciate distinctive luxury. The Mayfairsilk Difference: ✓ Grade 6A Mulberry silk (the highest quality available) ✓ Thicker, more durable weave (22–25 Momme vs. standard 19) ✓ Natural thermoregulation for year-round comfort ✓ British owned and designed ✓ UK-based warehouse for fast, reliable delivery ✓ 30-night sleep guarantee on pillowcases Luxury Without Compromise: Free Next-Day Delivery on orders over £50 to the UK and €180/$180 to the EU/US. All taxes and duties calculated upfront—no surprise charges. Discover Mayfairsilk Today →

Polyester vs Silk: Core Differences

Texture & Feel 

Polyester achieves its smoothness through its weave structure, not its fibre composition. Fresh out of the packaging, it can feel silky. However, the difference becomes apparent over time and under real-world sleeping conditions. Polyester doesn't breathe the way silk does. It traps warmth against your skin, and because it's non-absorbent, any moisture sits on the surface rather than being wicked away. 

On the other hand, silk has a naturally fluid, almost weightless quality that polyester can't fully replicate. Against skin, silk moves with your face rather than resisting it, which is why it's often described as feeling like a second skin. The texture also remains consistent whether the fabric is warm or cool, dry or slightly humid.

Silk has better breathability than polyester, and is also a temperature-regulating fabric. 

Temperature Regulation Properties

Polyester is a poor conductor of heat and doesn't breathe effectively. It traps warm air close to the body, which makes it comfortable in cold climates but problematic for hot sleepers, people going through hormonal changes, or anyone living in a warmer environment. 

Silk is one of the few natural fibres that actively adapts to body temperature. In warm conditions, it dissipates heat and wicks moisture, keeping the skin surface cool and dry. In cooler conditions, it provides a gentle insulating layer without overheating. This thermoregulating behaviour is a direct result of silk's protein fibre structure.

Polyester vs Silk: Skin Impact

How Both Fabrics Handle Moisture

Polyester, being synthetic, is largely non-absorbent. Moisture from sweat or overnight skincare products stays on the surface, which can dilute your serums and creams before they've had a chance to absorb properly.

On the other hand, silk is naturally hygroscopic. As such, it can absorb up to 30% of its weight in moisture without feeling damp. That means it quietly pulls excess moisture away from your skin's surface while you sleep, helping to maintain your skin's natural hydration balance.

If you're spending money on overnight skincare, a polyester pillowcase is actively working against your routine. Silk pillowcases won't absorb your products as aggressively, so more of what you apply actually stays on your skin where it belongs.

How Both Fabrics Perform for Sensitive Skin

Polyester isn't inherently hypoallergenic and can sometimes cause mild irritation in people with reactive skin due to its synthetic chemical composition. 

Meanwhile, silk has a naturally hypoallergenic structure that resists dust mites, mould, and other common allergens. Its protein composition is also inherently resistant to bacterial growth, which matters greatly for anyone dealing with acne, rosacea, or general skin sensitivity. 

Silk is naturally hypoallergenic and resistant to dust mites and mould, while polyester can harbour bacteria more readily and lacks natural antimicrobial properties.

Polyester vs Silk Pillowcases: Price Comparison

The lower upfront cost of polyester is obvious. Polyester pillowcases are widely available at most price points, from budget retailers to mid-range homeware stores. A high-grade luxury queen-size polyester satin pillowcase typically costs between £29 and £59. The low price point makes them accessible for anyone wanting to move away from cotton without a significant financial commitment.

However, polyester pillowcases tend to wear out faster than silk ones. The satin weave is prone to snags, pilling, and a gradual loss of that initial smoothness, especially with frequent washing at higher temperatures. 

Genuine silk pillowcases vary considerably in price depending on momme weight, silk grade, and brand. The momme weight is the single most important quality indicator when evaluating price. A 19–25 momme weight is considered the optimal range for pillowcases: durable enough for regular washing, dense enough to deliver real skin and hair benefits, and thick enough to feel genuinely luxurious.

At Mayfairsilk, a standard queen-size pure mulberry silk pillowcase typically costs between £78 and £82. Our pillowcases are crafted from the highest-grade mulberry silk at a momme weight of 25.  

Silk pillowcases are more expensive than polyester options, but they hold up better over time and provide more value. 

Polyester vs Silk Pillowcases: Comparison Table

Silk Wins Long-Term, Mayfairsilk Delivers the Quality to Prove It

Mayfairsilk sheets and pillowcases are carefully crafted from the highest quality of silk fibres. 

Polyester works as a low-cost, low-maintenance choice, but it stops delivering once you factor in skin health, temperature regulation, and how quickly it wears down. Silk costs more upfront, but it holds its performance, so its value evens out over years of use rather than months. 

At Mayfairsilk, we've built our entire product line around the principle that silk should be experienced, not simply owned. Every pillowcase in our range carries the OEKO-TEX® Standard 100 certification, meaning every thread and dye has been tested to ensure that our pieces are free from harmful substances. Browse our full range of pure mulberry silk pillowcases and bedding to find the right option for your sleep, skin, and hair.

Frequently Asked Questions (FAQs)

Are silk pillowcases better than polyester?

Yes, silk pillowcases outperform polyester pillowcases in nearly every category affecting sleep quality, skin health, and hair condition. Silk naturally reduces friction, wicks moisture, regulates temperature, and resists allergens, all of which polyester cannot replicate at the fibre level. 

Polyester is an upgrade over cotton and serves a purpose at a lower price point, but if long-term skin and hair benefits are the goal, silk is the stronger choice by a significant margin.

Which pillowcase material is best for skin?

Silk is the best pillowcase material for skin. Its natural protein structure closely resembles human skin's composition, its smooth surface reduces the overnight friction that contributes to sleep lines, and its hypoallergenic properties make it suitable even for sensitive, acne-prone, or reactive skin.

Is polyester stronger than silk?

In terms of raw tensile strength, silk is one of the strongest natural fibres in existence, with an excellent strength-to-weight ratio for a natural material. However, silk requires more careful handling in practical everyday use. 

It's sensitive to high heat, harsh detergents, and prolonged direct sunlight, all of which can degrade its structure over time. With correct care, a high-quality silk pillowcase will outlast most polyester alternatives by several years.

What is the best momme weight for a silk pillowcase?

Momme (mm) is the unit used to measure the weight and density of silk fabric. A higher momme means more silk fibre per unit area, resulting in a heavier, denser, more durable fabric. Pillowcases below 19 momme tend to be too lightweight for regular washing and daily use. 

A 25 momme pillowcase sits at the top of the optimal range, providing a noticeably richer feel and greater longevity, which is why it's the specification used by premium silk bedding brands for their core pillowcase offerings.

What’s the advantage of choosing Mayfairsilk Pillowcases over polyester options?

At Mayfairsilk, our pillowcases are crafted from Grade 6A long-fibre mulberry silk at 25 momme, offering the highest quality available. Combined with British-owned & designed craftsmanship, OEKO-TEX® certification, and a 30-night sleep guarantee, our pillowcases offer real long-term value.

*Note: The prices and product listings mentioned above are approximate and may vary over time or by location. Actual costs can differ based on pricing policies, provider experience, and market conditions.