OPSUNDBAY

Deepsilk™ Pillowcase

Regular price 895,00 kr
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Silk Pillowcase for Gentle Nighttime Care

Deepsilk is developed for those who want a pillowcase that actively supports the skin and hair during rest. This specially engineered cosmetic silk fabric differs from regular silk because it is enriched with sericin — a natural protein found in raw silk. The aim is to help support the skin and hair’s moisture balance throughout the night while providing a smooth, calm surface against the skin. The pillowcase (60x63 cm) is made from 25-momme charmeuse-woven 6A mulberry silk.

Benefits of Deepsilk™

Sericin is released on contact through microscopic micelles and may help support moisture balance in both skin and hair. Sericin also has antibacterial properties. Deepsilk has been laboratory-tested, and its unique benefits remain effective for more than 20 washes — after which the pillowcase remains soft and beautiful. The silk contains no dyes or silicone treatments, preserving the material’s pure structure and natural softness. The smooth charmeuse surface reduces friction against the face and hair, which may help minimise marks, tangling and nightly irritation. The silk is breathable, temperature-regulating and hypoallergenic, making it a comforting option for delicate or sensitive skin.

Fit & Function

The pillowcase is designed with an envelope closure that keeps the pillow in place without leaving marks. The tight charmeuse weave creates a smooth, soft surface that feels especially gentle against both skin and hair — night after night. The Deepsilk pillowcase comes in a gift box and pairs seamlessly with the rest of our Deepsilk collection. An ideal choice for yourself or someone you wish to treat to a calmer and more caring night’s sleep.


  • Enriched with Sericin Silk Protein 
  • 25 Momme Charmeuse Weave
  • 100 % 6A Highest Grade Mulberry Silk 
  • No Silicone Added
  • No Use of Toxic Dyes
  • OEKO-TEX Certified (Standard 100)
  • Washable: Machine wash

Micellar action

The sericin silk protein in Deepsilk is delivered to the skin via micelles.

What makes Deepsilk unique?

Deepsilk is enriched cosmetic silk, designed by and exclusive to OPSUNDBAY.

Fabric Guide

Choosing the right Quality

Deepsilk™ offers a distinct combination of softness, skin hydration, and moisture retention, making it superior to many other bedding fabrics. While normal silk lacks the skin-enhancing benefits, Deepsilk is enriched with sericin, a natural silk protein that helps lock in moisture and protect the skin during sleep. This results in a fabric that not only feels luxurious but also supports skin hydration and elasticity, reducing overnight moisture loss.

When compared to cotton, linen, and bamboo, which are breathable and durable but can draw moisture away from the skin, Deepsilk provides a far more gentle experience. Cotton and linen, though comfortable, are absorbent fabrics that tend to dry out the skin. Bamboo is softer but doesn’t offer the same level of moisture retention or skin benefits as Deepsilk.

For those who prioritize sleep quality and skin care, Deepsilk is the clear choice. Its smooth texture helps promote restful sleep by reducing friction, and its ability to retain moisture supports your skin’s natural hydration. If you’re looking for bedding that combines exceptional comfort with real benefits for your skin, Deepsilk stands out as the best option.

Fabric comparison chart showing the differences between Deepsilk™, normal silk, and cotton/linen fabrics. Deepsilk™ stands out for its skin hydration, softness, and moisture retention, compared to normal silk and cotton/linen, which are less effective in these areas.