GHK-Cu

A copper-binding peptide that promotes tissue remodeling, collagen synthesis, and anti-aging.

Copper PeptideGHK-CopperGlycyl-L-Histidyl-L-Lysine:Copper(II)

GHK-Cu is a naturally occurring copper-binding tripeptide found in human plasma, saliva, and urine. Discovered in the 1970s, it declines significantly with age — from about 200 ng/mL at age 20 to 80 ng/mL by age 60. Research has identified it as a powerful signaling molecule that remodels tissue, reduces inflammation, promotes collagen synthesis, and may even reprogram genes toward a healthier state.

Key Benefits

Skin Rejuvenation

Stimulates collagen and elastin production, improving skin firmness, reducing wrinkles, and enhancing overall skin quality.

Wound Healing

Accelerates wound closure, reduces scarring, and promotes organized tissue regeneration with proper collagen deposition.

Anti-Inflammatory

Reduces oxidative stress markers and inflammatory cytokines, providing systemic anti-inflammatory effects.

Hair Growth

Research shows stimulation of hair follicle growth and increased hair follicle size, potentially reversing miniaturization.

Gene Expression Reset

Studies suggest GHK-Cu can reprogram expression of over 4,000 genes toward patterns associated with younger, healthier tissue.

Bone & Cartilage Support

Promotes osteoblast activity and cartilage repair, supporting musculoskeletal health.

Research Dosing Information

Common Dose

1-2 mg per day (injection) or topical application

Route

Subcutaneous injection or topical (cream/serum)

Frequency

Daily (injection) or twice daily (topical)

Cycle Length

4-12 weeks

Not FDA-approved as an injectable. Widely available in cosmetic skincare products as a topical. Injectable form is used in research settings. Topical concentrations of 1-2% are common in skincare.

Research Summary

GHK-Cu has been studied for over 40 years with a strong body of evidence. Dr. Loren Pickart's research established its role in wound healing and tissue remodeling. A landmark 2012 study identified GHK's ability to reset the expression of 4,000+ human genes toward healthier patterns. Research spans wound healing, skin aging, hair loss, COPD, and cancer gene suppression. Multiple studies confirm its safety profile in topical and injectable forms.

Safety Considerations

Topical GHK-Cu is generally recognized as safe in skincare products.
Injectable form is not FDA-approved.
Copper overload is theoretically possible with excessive use — monitor copper levels.
Well-tolerated in published studies with minimal adverse effects.
Avoid in Wilson's disease or copper metabolism disorders.

Frequently Asked Questions

Can I apply GHK-Cu topically?

Yes. GHK-Cu is widely used in skincare products at 1-2% concentration. Topical application has demonstrated benefits for skin rejuvenation, wound healing, and hair growth in research.

What age does GHK-Cu start declining?

Plasma levels peak around age 20 (~200 ng/mL) and decline to about 80 ng/mL by age 60. This decline correlates with reduced healing capacity and visible aging.

Is injectable GHK-Cu better than topical?

Injectable delivers systemic effects (anti-inflammatory, gene expression changes) while topical targets local skin and hair. The best approach depends on your goals.