Copper Has Receipts.
What copper does, what the research found, and why we put it to bed.
Copper plays a role in the processes that support collagen and elastin. It's widely studied for its antimicrobial properties. And unlike most things promising to improve the appearance of your skin while you sleep, copper-containing pillowcases have actually been put through randomised trials.
Naturally, we put it to bed.
2 randomised trials · 118 participants · measured from 2–8 weeks
What The Research Shows
Measured, not assumed.
Two double-blind randomised studies compared copper-containing pillowcases with pillowcases without copper.
57 People · 4 Weeks
Significant improvements were reported in wrinkles, crow's feet, fine lines and general skin appearance.
61 People · 8 Weeks
A second study reported improvements in crow's feet and measured skin roughness.
We reference the research because we prefer receipts to very enthusiastic adjectives.
What copper brings to bed.
Copper brings the science. Silk brings manners.
Collagen + elastin
Copper is involved in processes that support collagen and elastin, two proteins important to skin structure and elasticity.
Tiny mineral. Serious responsibilities.
Antimicrobial by nature
Copper is widely studied for its antimicrobial properties, including in textiles.
Useful credentials for something spending the night pressed against your face.
Silk protects the routine
Silk creates less friction and is less absorbent than cotton, giving your skin and hair a gentler place to spend the night.
Exactly the kind of environment we want for the skin barrier we are slightly obsessed with.
Silk protects the routine. Copper upgrades it.
Turns out they have excellent chemistry.
The Key Detail
Why a pillowcase.
No new step required.
Your pillowcase already spends hours in direct contact with your face every night.
No extra serum. No complicated layering order. No remembering to do something clever at 10:47pm.
Pillow By Limen pairs that opportunity with Grade 6A, 22 momme mulberry silk treated with a copper-ion solution during textile production.
You go to bed. Your pillow gets to work.