GHK-Cu: Skin, Hair, and Beyond

The copper peptide that started in cosmetics has serious systemic potential. Here's what the science shows.

What is GHK-Cu?

GHK-Cu is a small peptide (just 3 amino acids) bound to copper. It's naturally present in human plasma but declines sharply with age — by your 60s, levels are about a third of what they were at 20.

What it does

Stimulates collagen and elastin production
Activates wound healing genes
Reduces inflammation
Promotes hair growth (especially when applied topically to the scalp)
Antioxidant activity

How it's used

Topical

The most common form. Used in serums and creams for anti-aging and hair growth. Apply to clean skin or scalp daily.

Subcutaneous injection

Less common but research suggests systemic benefits — improved sleep, recovery, and even mood. Typical research doses: 1-3 mg/day.

Combining GHK-Cu

Often blended with BPC-157 and TB-500 (GLOW blend) for full-spectrum healing and skin benefits.

Things to watch

The blue color is normal (it's copper)
Don't take orally — it's destroyed in the gut
Avoid combining with high-dose vitamin C topically (can deactivate the copper)