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NAC helps regulate glutamate levels, the brains most important neurotransmitter
In this case, the data tells a clear story: when properly formulated, GHK-Cu does not inherently destabilize other peptides, and the idea that it universally ruins combinations is not supported by real-world degradation testing
However, the aforementioned study involved only 20 subjects who self-applied skin products and overall the study methodology was highly questionable
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