Your peptides aren't reaching your cells
Less than 1% of most serums actually get through.
<1%
of standard peptides penetrate past the stratum corneum. The rest oxidise on the surface.
Your skin barrier exists for a reason. It keeps pathogens out, water in, and unfortunately, most of your skincare sitting on top doing nothing productive.
Peptides are signalling molecules. They tell your cells to produce collagen, repair damage, reduce inflammation. But they can only do that if they reach the dermis, where your fibroblasts actually live.
Where Peptides Get Stuck
Stratum Corneum
The outermost layer. 15-20 cells thick. Blocks most topical peptides entirely.
Oxidation
Copper peptides degrade on contact with air. By the time they reach your skin, potency is already dropping.
Molecular Size
Standard GHK-Cu is too large to pass through intercellular lipid channels without a delivery vehicle.
pH Instability
Peptide bonds break down outside a narrow pH window. Most formulations can't maintain it.
The skincare industry has known about this for years. The response has mostly been to increase concentration and hope for the best. More peptide on the surface is still peptide on the surface.
"If your peptides can't reach your cells, they're expensive decoration."
Veronica, Aurabiōm FounderAURABIŌM
© 2026 Aurabiōm. All rights reserved.