OUR INGREDIENTS

GHK-Cu

The regenerative copper signal

Regenerates

Stimulates collagen, elastin, and glycosaminoglycan production.

Repairs

Documented anti-inflammatory and healing properties.

Restores

Rebuilds tissue integrity at a cellular level.

What it is

A naturally occurring tripeptide bound to a copper ion, first identified in human blood plasma in 1973 — one of the body’s own signaling molecules for tissue repair.

How it works

GHK-Cu stimulates fibroblasts to produce collagen, elastin, and glycosaminoglycans (the building blocks of firm, resilient skin). It also has documented anti-inflammatory and antioxidant properties that support overall skin recovery.

Macro photograph of teal liquid with shimmering copper particles representing GHK-Cu in St.GABRIEL's The Serum CU
1973
the year GHK-Cu was first identified in human blood plasma as a natural tissue-repair signal.

Why we chose it

For our most restorative product, we wanted an ingredient with a genuine biological mechanism — not just a trendy buzzword. GHK-Cu’s decades of peer-reviewed research made it the clear anchor for The Serum CU.

Found in

RESTORE (The Serum CU)

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