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Here is what researchers most often study, all in animal or cell models: Cytoprotection: Much of the early work looked at how the peptide affects the stomach and gut lining in rodents
It can bring about several benefits, including skin whitening and health improvement
Bibcode:2011ChEuJ..1710151H
How Copper Peptides Work Copper peptides (like GHK-Cu) bind copper ions and interact with skin cells to help stimulate collagen production, improve moisture retention, and support repair pathways
Yet, their effectiveness often sparks debate
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