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Explainers

How peptides work, how they are made and tested, and how to read the research.

A small glass dish holding a clear blue-green solution on a dark bench, lit by warm gold side light.

Explainers · November 3, 2026

GHK-Cu, Explained: What the Copper Peptide Research Measures, and What It Does Not

GHK-Cu is three amino acids holding one copper ion. A new dermatology review sorts the cell-culture findings from the human ones, and the gap between them is the story.