Ingredient or product comparison
GHK-Cu vs Other Copper Peptides
Not all copper peptides are created equal. The research literature focuses overwhelmingly on GHK-Cu because it's the form found naturally in human tissue. But you'll encounter other variants in commercial products. AHK-Cu, or Alanyl-Histidyl-Lysine-Copper, sub
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- Not all copper peptides are created equal. The research literature focuses overwhelmingly on GHK-Cu because it's the form found naturally in human tissue. But you'll encounter other variants in commercial products.
- AHK-Cu, or Alanyl-Histidyl-Lysine-Copper, substitutes alanine for glycine. Some studies suggest it may stimulate hair follicle elongation and dermal papilla cell proliferation in vitro. The mechanisms overlap with GHK-Cu but aren't identical.
- Copper Tripeptide-1 is often used interchangeably with GHK-Cu in skincare marketing, though they're the same compound. If you're comparing products, understanding GHK-Cu versus other copper peptides helps you make informed decisions.
- For hair regrowth specifically, most research and clinical protocols use GHK-Cu. It has the longest safety record and the most supporting evidence. Unless you have specific reasons to try alternatives, GHK-Cu remains the standard.