GHK Peptide: The Anti-Aging Tripeptide for Skin & Hair

GHK is a tripeptide naturally found in human plasma, saliva, and urine. Discovered in the 1970s by Dr. Loren Pickart, it was identified as a factor in young blood that could reset older liver tissue to a more youthful gene expression profile. Plasma GHK levels decline from ~200 ng/mL at age 20 to ~80 ng/mL by age 60, correlating with visible aging signs.

GHK naturally has a strong affinity for copper(II) ions, forming the GHK-Cu complex. While GHK-Cu is more commonly marketed in skincare, free GHK itself is biologically active and can acquire copper from the body. Key differences:

• GHK: The free tripeptide; acts as a signaling molecule independent of copper
• GHK-Cu: Copper-bound form; copper delivery enhances certain enzymatic activities (collagen synthesis, antioxidant enzymes)

Both forms ultimately trigger similar regenerative pathways, but GHK-Cu may have an edge for topical skin applications due to direct copper delivery to skin cells.

Research has demonstrated GHK's effects across multiple tissue types:

• Collagen synthesis: Upregulates types I, III, and V collagen production
• Wound healing: Attracts immune cells and fibroblasts to injury sites
• Hair growth: Enlarges hair follicle size and stimulates follicle stem cells; may help with thinning hair
• Anti-wrinkle: Improves skin elasticity, thickness, and firmness
• Gene expression: Resets expression of 31.2% of human genes to a healthier pattern

GHK can be used topically or via subcutaneous injection:

• Topical: Creams and serums with GHK or GHK-Cu at concentrations of 0.01-0.1% applied daily
• Subcutaneous: 1-3 mg/day for systemic anti-aging effects

For research-grade GHK, we recommend Ascension Peptides for their verified purity and third-party testing.