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The treatments are well-tolerated by most individuals, with minimal side effects

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GHK-Cu has accumulated one of the broadest and most well-established research profiles of any small peptide in regenerative and skin biology science: Collagen and ECM Research: Studies have consistently documented GHK-Cus stimulatory effects on collagen synthesis in fibroblast models, with research reporting upregulation of collagen type I, III, and IV production alongside modulation of MMP and TIMP activity establishing GHK-Cu as one of the most well-characterised collagen-stimulating peptides in dermatological and tissue biology research

The most-studied version and the one you want in your skincare is GHK-Cu , which stands for glycyl-L-histidyl-L-lysine-copper