why is my ghk cu blue Ever wonder 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. Cu copper peptide products Bryan Johnson's Peptide List Pack Size:60 Patches - 2 month supply - SAVE Β£10! filter-so-best-seller
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