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What Makes GHK-Cu Copper Peptides Blue

Pause-and-resume short 3-5 day breaks when site reactions persist or flushing becomes socially intrusive

GHK-Cu also apparently increased glutathione (GSH) levels, suggesting a broader upregulation of antioxidant defense mechanisms rather than action through a single pathway

The vascular improvements may enhance BDNF delivery to brain regions by improving blood flow to the hippocampus and cortex
