GHK-Cu at a concentration of 1nM increases the expression of basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF) in irradiated human dermal fibroblasts, both of which aid blood vessel formation and blood flow into damaged tissues [46]
1 H NMR (400 MHz, DMSO) 8.96 (s, 2H), 8.83 8.63 (m, 2H), 8.44 (dd, J = 23.9, 7.0 Hz, 1H), 8.36 8.24 (m, 2H), 8.02 (s, 4H), 7.82 (s, 3H), 7.39 7.28 (m, 2H), 4.76 (tt, J = 16.1, 8.0 Hz, 2H), 4.37 4.24 (m, 1H), 4.15 (d, J = 9.7 Hz, 2H), 3.38 (q, J = 7.0 Hz, 4H), 3.13 2.87 (m, 6H), 2.74 (s, 4H), 1.75 1.13 (m, 18H), 1.09 (t, J = 7.0 Hz, 5H)
This explains part of how GHK-Cu rejuvenates aging skin
The skins outermost layer repels water-loving molecules like L-ascorbic acid and that means that the molecule may not get sufficiently absorbed, Dr
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This gives you a clear sense of whats practical before considering whether any of these belong in your own stack