A clinician's standard
Created by a dermatology PA who spent 15 years treating skin. 25-momme mulberry silk with silver-ion technology.
25 Momme Mulberry Silk
A complete silk ritual for skin, hair, and restorative sleep.
A clinician's standard
Created by a dermatology PA who spent 15 years treating skin. 25-momme mulberry silk with silver-ion technology.
Smoother skin: Silk glides where cotton drags. Less friction overnight for smoother, softer skin by morning
Gentle on hair: Less friction means less breakage, less frizz and fewer tangles
Light blocking: Silk sleep mask shields light completely for uninterrupted rest
Cooling + calming: Breathable, temperature-regulating silk that helps your body settle into rest
Clean sleep surface: SILVADUR™ silver-ion infused across every piece in the kit, stays fresher between washes
Why Silk for Skin + Hair
Cotton absorbs oils, moisture and skincare products, creating friction that can cause sleep creases, breakage and frizz. ZILK absorbs less and reduces friction, so your products stay where they belong and your hair wakes with fewer tangles.
Why 25-Momme?
Momme measures silk's weight and density. Most silk pillowcases use 19 to 22 momme. ZILK uses 25 momme, which means a tighter weave, smoother surface and a fabric that holds its performance wash after wash.
The Clean Sleep Surface
Every piece in the ZILK sleep kit is infused with Silvadur™ silver-ion technology, from LANXESS, designed to resist odors and keep silk fresher between washes.
Silk's dense, smooth weave is kind to skin and leaves no fiber shedding or snags behind. The thermo-regulating surface keeps the pillowcase cool and breathable, so the temperature stays comfortable whether you run warm or cool at night.
Suitable for: All skin types
Treatment: Silver-ion infusion
Fabric: 100% 25-momme 6A grade Mulberry silk
Closure (pillowcase): Hidden zipper
Inclusions: 1 pillowcase, 1 sleep mask, 1 plush silk scrunchie
Certification: Oeko-Tex® certified, responsibly made, non-toxic
Care: Machine washable (pillowcase + scrunchies); Hand wash recommended for sleep mask
Free Shipping
- Free standard shipping on all U.S. orders
Order Processing
- Orders placed before 2:00 PM ET, Monday through Friday, ship same day
- Orders placed after 2:00 PM ET ship the next business day
Shipping Origin + Delivery
- Ships from our U.S. fulfillment center in Alpharetta, Georgia
- Standard shipping: 2 to 5 business days
- Expedited: $15, 2 business days
- Overnight: $25, 1 business day
- Delivery times to Alaska, Hawaii and U.S. territories may vary
- See our full shipping policy
Returns
- We accept returns within 60 days of delivery
- Items must be unused, unwashed and in original packaging with all tags intact
- A flat $8 return shipping fee is deducted from your refund
- Original shipping charges are non-refundable
- Refunds are issued to your original payment method within 3 to 5 business days of receipt
- See our full refund policy
Made by a clinician
PA-C · Dermatology and Aesthetics
"After fifteen years of treating skin, I kept seeing the same pattern. Patients invested in their skin by day, then slept on a surface that worked against them all night. When I could not find a pillowcase that met my clinical standards, I made one. I designed ZILK to be the overnight foundation of your skin and hair routine, protecting what you invest in it by day and offering a calm, restorative surface to sleep on at night."
Elizabeth Cook, PA-C
Sleep is a big part of how skin and hair recover. Whatever ZILK piece you sleep on, the fabric is the same: 25-momme mulberry silk infused with SILVADUR silver ions. Smooth enough to glide against skin and hair, and clean enough to stay fresh between washes.
Every ZILK product is infused with Silvadur™ silver-ion treatment, from LANXESS. Designed to keep fabric cleaner between washes while staying gentle on skin.
Independently tested
ZILK silk was washed 20 times, then tested by SGS. The result: its silver-ion technology still inhibits the growth of bacteria on the fabric surface.
S. aureus and K. pneumoniae are the two standard bacteria used in textile testing.
Momme measures silk's weight and density. At 25-momme, the weave is tighter, the surface is smoother and the fabric holds its performance significantly longer than the 19-23 momme silk used by most brands. It's the difference between silk that feels good now and silk that keeps working for years.
ZILK Sleep uses only 6A grade mulberry silk, woven from the longest, most uniform fibers available. The result is exceptional softness, resistance to pilling and a surface that glides against skin and hair rather than catching on it.
Every ZILK Sleep fiber meets OEKO-TEX® STANDARD 100, the leading independent certification for textile safety. Tested against more than 1,000 potentially harmful substances and verified safe for daily skin contact.
Every ZILK piece is woven from 25-momme mulberry silk and infused with SILVADUR™ silver-ion technology, engineered for the surface your skin and hair rest on a third of your life. A cooler, smoother, quieter surface than what most people sleep on.
Pillowcase + scrunchies can be hand or machine washed in a mesh bag on delicate, with pH-neutral detergent. Sleep mask should be hand washed for best results. Do not wring. Air dry flat or hang.
Silver has been valued for its cleanliness properties since ancient times. ZILK silk is treated with SILVADUR™, the silver-ion technology from LANXESS, designed to resist odors and keep fabric fresher between washes.
With proper care, ZILK’s 25 momme silk maintains its smoothness and durability for years of nightly use.
Momme (pronounced "mo-may") is the unit used to measure silk's weight and quality. A higher momme means a denser weave and more durable fabric. While many silk pillowcases are made with 19 or 22 momme silk, ZILK uses 25 momme, a denser and smoother weight that holds its finish wash after wash.
™ Trademark of LANXESS Deutschland GmbH or its affiliates.
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