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From a practical standpoint, GHK-Cus tripeptide-copper complex is water-soluble and can be formulated in aqueous serums, while Matrixyls palmitic acid chain gives it a more lipophilic character suited to cream-based formulations

Fahey JW, Zhang Y, Talalay P

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High-quality assurance: Qyherb strictly controls every link from raw material procurement to the production process to ensure that the provided blue copper peptide raw materials have excellent purity and stability