A woman with dark hair lies on a bed in a silk slip dress, resting on an ivory ZILK silk pillowcase against a cream paneled headboard.

A woman with long dark hair rests her head on an ivoery ZILK silk pillow, wearing a white silk camisole and white silk bedding in a softly lit bedroom.

WAKE UP TO CALMER SKIN.

Silk pillowcases that care for your skin and hair while you sleep.

SHOP PILLOWCASES

25-momme, 6A grademulberry silk

Silver-ion technologyfor a fresher surface

OEKO-TEX® certifiedindependently verified

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Restorative Essentials

Silk Pillowcase From $89

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Deep Restoration Sleep Mask $55

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Silk Sleep Kit From $149

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Silk Sleep Hair Bonnet $68

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Science of Silk, Ritual of Rest

WHY ZILK?

ZILK transforms sleep into a ritual for skin and hair. Crafted from 25-momme, 6A mulberry silk and woven with silver-ion technology, each piece pairs science with sensory calm.

Why ZILK Works

Naturally Clean

Woven with SILVADUR™ silver-ion technology, designed to resist odors and keep fabric fresher between washes.

Hydration

Silk minimizes absorption, so the moisture and skincare you applied stays on your skin, not on your pillowcase.

Hair + Sleep Benefits

A 25-momme weave reduces friction overnight, helping minimize frizz, tangles, and breakage.

A close-up portrait of a woman with red hair and freckles resting her head on ivory ZILK silk, with warm natural light and a soft blurred background.

Silver-infused silk engineered for restorative rest

THE SCIENCE OF BETTER SLEEP

What you sleep on affects how you look and feel when you wake up. ZILK's silver-infused mulberry silk reduces friction and helps your skin hold onto moisture through the night.

The result is smoother skin, less frizz, and a surface that stays cleaner between washes.

SEE HOW IT WORKS

Deep Restoration

Into the dark

The other half of a restorative night is the dark. A wide silk band wraps around your head and adjusts from snug to soft, so you choose how much gentle weight you feel, and it blocks the light completely. In full dark, sleep comes more easily and stays deeper through the night.

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Our Founder

Elizabeth Cook

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."

The science behind ZILK

Our standard

Made with intention

We hold everything we make to a higher standard, the kind you feel the first night and still feel a year in. A denser weave, a higher grade of silk, a surface that stays fresh, tested and certified before it reaches you.

Weave weight

25-momme, dense and durable

19 to 22-momme, thinner
Surface treatment

Silver-ion technology for a fresher surface

Untreated
Independent testing

Tested by SGS, still performing after 20 washes

Rarely tested
Certification

OEKO-TEX Standard 100 and bluesign

Often uncertified
Made by

A practicing Dermatology + Aesthetics PA-C

A generic manufacturer

Recommended by Cosmetic Doctors

"Post-treatment, the skin is more susceptible to irritation and bacterial exposure. ZILK can support recovery and improve treatment outcomes. I recommend incorporating this into post-procedure care."

Dr. Dietske Miedema

Cosmetic Doctor

"In clinic, we focus on optimizing the skin barrier and reducing inflammation. What patients sleep on plays a role in bacterial load, friction, and overnight moisture loss. Conventional cotton can work against treatment outcomes. I advise patients to consider this as part of their overall skin protocol — ZILK is what I recommend."

Dr. Adriana Villadiego Pereira

Cosmetic Doctor KNMG

Everyday Essentials, Designed for Rest