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Eleftheriadou, V., Thomas, K

Combined with GHK-Cu application, the massage amplifies the serum's penetration while simultaneously stimulating the mechanical stretch signals that independently activate dermal papilla cells

doi: 10.1038/s42255-025-01245-6 108 Mazloum-RavasanSMadadiEMohammadiAMansooriBAminiMMokhtarzadehAet al

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In contrast, Brown et al

However, it is always a good idea to consult with a healthcare provider before starting a high-dose regimen, especially if you have existing health concerns