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AI and AI-assisted tools statement During the preparation of this manuscript, the AI tool ChatGPT (GPT-5, released 2025-08-07) was used to generate Figure 1 and the Graphical Abstract and to improve the readability and language of the manuscript

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Because of these properties, GHK-Cu has been widely studied in dermatology and regenerative medicine

**Feel free to start with the smallest amount of the peptide cream if you have more sensitive skin, or dilute it a bit with another cream or serum