GHK-Cu is one of the very few skincare ingredients where the before-and-after story is backed by genuine science rather than clever photography
Glutathione Peroxidase 4 Differentially Regulates the Release of Apoptogenic Proteins from Mitochondria Rains, J.L., & Jain, S.K
The result is a more firm and hydrated complexion with visibly fewer fine lines and wrinkles
Thus, the fear literature often features outcomes using facial electromyography, EMG (de Groot et al., Reference de Groot, Smeets, Kaldewaij, Duijndam and Semin2012, Reference de Groot, Semin and Smeets2014, Reference de Groot, Smeets and Semin2015a), or functional magnetic resonance imaging, fMRI (Mujica-Parodi et al., Reference Mujica-Parodi, Strey, Frederick, Savoy, Cox, Botanov and Weber2009