Copper-binding tripeptide
Also known as: Copper tripeptide AHK · Alanine-Histidine-Lysine copper
The essentials at a glance
Discussed mainly in cosmetic skin and hair models; medicinal benefit and safety are unconfirmed.
Distinction: AHK-Cu is discussed mainly in cosmetic hair and skin models, while GHK-Cu is studied more broadly around skin matrix and collagen signalling.
Available data come mostly from animal or cell models; robust human efficacy and safety data are lacking.
Not FDA/EMA approved: No FDA- or EMA-approved medicinal product; efficacy and safety are not established.
Research questions
This studies how a short peptide binds copper ions and may support cell signalling in skin tissue, similar to a transport container for an important trace element. Collagen markers and cell activity in skin models are measured.
This examines how signals affect collagen and other structural proteins that give skin its firmness and elasticity, similar to studying the scaffolding beneath a building's surface. Researchers typically measure collagen production and skin structure in laboratory skin models.
This studies how a peptide influences the migration of cells toward an injury site, similar to workers rushing to a construction site. Speed and extent of cell migration are measured in lab models.
Simple example
Think of it like an ingredient in a skin cream meant to act on the skin surface, similar to other common care ingredients.
Cosmetic use does not presuppose medical efficacy and is tested differently from medicines.
Community themes
Personal experience reports and vendor marketing from communities are not scientific proof of efficacy.
Users exchange personal impressions of skin appearance, wrinkle depth, or hair growth after using cosmetically marketed peptides, usually based on their own photos rather than measurement devices. Such subjective impressions and marketing claims are not proof of a confirmed effect.
Vendors often advertise products with broad efficacy claims, comparison tables against competitors, and customer quotes. Such marketing statements are driven by sales interest and do not constitute independent scientific proof of efficacy.
Discussion covers which vendors are seen as more trustworthy and how purity test results differ between batches. Such community assessments are based on limited samples and do not replace independent lab testing of each individual batch.
Why individual profiles do not contain mixing instructions
Reconstitution depends on the exact product, label, identity, concentration, sterility and stability. Arithmetic examples appear only in the separately labelled community area and are not recommendations.
Reconstitution & quantitiesOpen basics, units and sourcesUse & mixingEvidence boundary
Confirmed medicinal benefit has not yet been established.
No peptide sales or individual recommendations. A separately labelled community area documents third-party protocol claims without medically endorsing them.
Primary sources
Regulators, trial registries and scientific databases support the classification and carry more weight than vendor or community claims.
