GHK-Cu stands for glycyl-histidyl-lysine, a tripeptide bound to a copper ion. It sounds technical, but the concept is simple: this compound signals your skin to behave more like it did when it was producing collagen more efficiently.
Research into copper peptides dates back decades, originally studied for wound healing before making its way into cosmetic formulations. Today it's prized for its ability to support firmness, even out texture, and calm the appearance of fine lines — all without the irritation that comes with harsher actives like strong retinoids.
In our Advanced GHK-Cu Serum, we've paired it with niacinamide, hyaluronic acid, and centella asiatica to round out the formula — so you get the benefits of copper peptides alongside hydration and soothing support in one step.