POSHEY Silk Pillowcases | 22-Momme Mulberry Silk | Lab-Tested

Cotton creates friction that tangles hair and presses sleep lines into skin. Synthetic satin is petroleum-based polyester marketed as silk. POSHEY uses 100% pure mulberry silk at 22-momme weight - naturally smooth, breathable, and dermatologically safer for sensitive skin.

POSHEY silk pillowcases have been independently lab-tested and shown to reduce friction by 43% compared to standard cotton pillowcases. Less friction means fewer sleep creases, reduced skin tugging, and less absorption of your skincare products overnight.

22-momme is the gold standard for silk pillowcases. Lower momme weights (16-19) are thinner and less durable. Higher weights (25+) can feel heavy. 22-momme provides the ideal balance of durability, smoothness, and breathability.

Machine wash on gentle cycle with cold water using mild detergent. No bleach or fabric softener. Air dry flat or tumble dry on low heat. Remove while slightly damp. Wash separately the first time. Gets softer with every wash.

Yes. Every POSHEY silk pillowcase is Oeko-Tex Standard 100 certified, meaning it has been independently tested for over 100 harmful substances and is safe for direct skin contact. Our silk is also Grade 6A - the highest quality classification for mulberry silk.