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Comparison

GHK-Cu vs AHK-Cu

All-around beauty peptide vs hair-focused copper peptide.

GHK-Cu vs AHK-Cu — side-by-side
AttributeGHK-Cu
Copper peptide
AHK-Cu
Alanine-Histidine-Lysine copper
CategorySkin, Hair & BeautySkin, Hair & Beauty
Best known forCollagen, wound healing, and hair researchHair growth research
In plain EnglishGHK-Cu is the most-researched 'beauty peptide.' Researchers study it for everything from anti-aging skincare to wound healing and even hair growth.AHK-Cu is GHK-Cu's hair-focused cousin. Same copper-peptide concept, slightly different sequence with stronger research-interest in follicle stimulation.
How it worksModulates copper-dependent enzymes, stimulates collagen and elastin synthesis, activates wound healing pathways, and influences hair follicle stem cells.Stimulates dermal papilla cells and VEGF expression in research models, encouraging hair follicle activity.
Researchers studySkin appearance, wound healing, hair density, and gene-expression modulation.Androgenetic alopecia, hair follicle stimulation, and hair shaft thickening.
Internet discussionForums treat it as the king of beauty peptides. Topical vs injectable debate is endless.Discussed alongside minoxidil and microneedling.

GHK-Cu

Copper peptide
Skin, Hair & Beauty
Best known for

Collagen, wound healing, and hair research

In plain English

GHK-Cu is the most-researched 'beauty peptide.' Researchers study it for everything from anti-aging skincare to wound healing and even hair growth.

How it works

Modulates copper-dependent enzymes, stimulates collagen and elastin synthesis, activates wound healing pathways, and influences hair follicle stem cells.

What researchers study

Skin appearance, wound healing, hair density, and gene-expression modulation.

Internet discussion

Forums treat it as the king of beauty peptides. Topical vs injectable debate is endless.

Quick summary

GHK-Cu is the most-studied cosmetic peptide, with research on collagen, wound healing, and hair follicle stimulation.

View full entry →

AHK-Cu

Alanine-Histidine-Lysine copper
Skin, Hair & Beauty
Best known for

Hair growth research

In plain English

AHK-Cu is GHK-Cu's hair-focused cousin. Same copper-peptide concept, slightly different sequence with stronger research-interest in follicle stimulation.

How it works

Stimulates dermal papilla cells and VEGF expression in research models, encouraging hair follicle activity.

What researchers study

Androgenetic alopecia, hair follicle stimulation, and hair shaft thickening.

Internet discussion

Discussed alongside minoxidil and microneedling.

Quick summary

AHK-Cu is a copper peptide specifically researched for hair follicle stimulation.

View full entry →

GHK-Cu vs AHK-Cu — common questions

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