GHK-Cu: The Copper Peptide
and Dermal Regeneration
March 28, 2026
4 min read
GHK -Cu (Glycyl-L-Histidyl-L-Lysine-Copper) is a human-derived tripeptide with an extraordinary ability to bind to copper. Discovered in the 1960s by biochemist Loren Pickart, this peptide has proven to be a potent activator of skin regeneration, with solid evidence in preclinical in vitro and in vivo studies.
As we age, plasma levels of GHK-Cu decrease dramatically — from ~200 ng/mL at age 20 to <80 ng/mL after age 60. This drop is directly correlated with loss of firmness, slower healing, and increased oxidative damage to the skin.
300%
More collagen vs. placebo
12h
estimated half-life
1960s
discovered by Loren Pickart
High
level of preclinical evidence
Benefits documented in research
Collagen synthesis
It stimulates the production of collagen types I and III, improving skin firmness and elasticity.
Powerful anti-inflammatory
It reduces inflammatory markers such as IL-6 and TNF-α, protecting dermal tissue.
Accelerated healing
It promotes the proliferation of fibroblasts and keratinocytes to repair wounds faster.
Hydration and skin barrier
It strengthens the lipid barrier and improves moisture retention in the dermis.
Cellular Antioxidant
Copper acts as a cofactor of superoxide dismutase, neutralizing free radicals.
Tissue regeneration
It activates genes for repairing and remodeling the extracellular matrix.
Mechanism of action
GHK-Cu acts as an epigenetic modulator: it activates more than 31 genes related to tissue repair and silences pro-inflammatory genes. Copper is an essential cofactor of lysyl oxidase (a key enzyme in collagen and elastin synthesis) and SOD1 (superoxide dismutase), giving this complex simultaneous antioxidant and regenerative properties.
⚠️ This article is for educational and research purposes only. It does not constitute medical advice. Always consult a healthcare professional before starting any protocol.