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. That's why it has become one of the most popular peptides in skincare.

What the Research Shows

GHK-Cu has been studied for decades in dermatological research. Researchers have studied it for its potential role in:

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 →