What Is GHK-Cu (Copper Peptide)? The Science Behind Radova's Repair Serum

If you've spent any time researching anti-aging skincare, you've probably come across copper peptides, specifically GHK-Cu. But what actually is it, and why does it matter for your skin?

What GHK-Cu Is

GHK-Cu (Glycyl-Histidyl-Lysine-Copper) is a naturally occurring peptide complex found in the human body. Levels naturally decline with age, which is part of why skin loses firmness and elasticity over time. Topical GHK-Cu is formulated to help replenish what your skin naturally loses.

What the Research Shows

GHK-Cu has been studied for decades in dermatological research. It's associated with:

Supporting collagen and elastin production
Helping the skin's natural repair processes
Antioxidant activity that helps protect against environmental stress

Why We Paired It With SNAP-8

In our Copper Peptide Repair Serum, GHK-Cu works alongside SNAP-8 (Acetyl Octapeptide-3), a peptide studied for its ability to help reduce the appearance of expression lines. Together, they target both repair (GHK-Cu) and visible smoothing (SNAP-8), rather than relying on a single active ingredient to do everything.

How to Get the Most From It

Consistency matters more than quantity with peptides. We recommend 2-3 pumps applied to clean skin morning and evening, followed by moisturizer and SPF in the AM. Because peptides can be sensitive to oxidation, we use an airless pump rather than a dropper. This helps preserve potency between uses.

The Bottom Line

GHK-Cu isn't a trend. It's a well-researched ingredient with real science behind it. If you're looking for a serum that targets visible aging at the source, copper peptides are worth understanding.

Ready to try it? Shop the Copper Peptide Repair Serum →