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In addition, treatment with 5-FU or AZ628 led to an increase in the intracellular levels of ferrous iron, as measured by confocal and flow cytometry of FeRhoNox-1 staining ( Figures 4E, F , and Supplementary Figures S3C, D )

Diabetologia 66 , 913930 (2023)

While rare, some users report changes in mood or emotional sensitivity

Now that you understand what GHK-Cu can do for your skin and the realistic timeline for results, you might be wondering: should I make my own serum or buy a commercial product

Most people start noticing subtle improvements after 4-6 weeks of consistent use

Known for supporting firmness, elasticity, smoothness, hydration, and a brighter complexion , GHK-Cu (the blue copper peptide) is a gentle yet powerful choice for anti-aging routines especially when formulated with clean, botanical-based ingredients