is ghk cu always blue Ever wonder why GHK-Cu blue? π, The color comes from copper itself. When the peptide binds to a copper ion, it forms the active copper peptide complex (GHK-Cu), creating its signature hue. Size:100 mcg/ml - 1 box (10amp. x 1ml) Vitamin B12 Hydroxocobalamin 2ml research-supply 2400 mg4% Face CreamVeganNon
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