GHK-Cu is an endogenous occurring copper-binding tripeptide composed of glycine (G), histidine (H), and lysine (K)
Key Peptide Complex (3%)
Most suppliers won't test for it
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In animal studies, DSIP demonstrated anxiolytic effects, reducing anxiety-like behavior in mice (Shekunova et al., 2002), and lowering plasma corticosterone levels in rats (Kovalzon et al., 1997)
Product effects: has anti-wrinkle effects, evens out skin tone, smooths, hydrates, improves skin elasticity and firmness, strengthens the protective barrier of the epidermis