does pinning ghk cu make skin tighter All About GHK-Cu Peptide The Benefits & Risks of

Clin Pharmacol Ther, 2014, 96(6): 672683

Alcohol deserves a mention as well

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Reported effects from clinical and research-context use Mild flushing or warmth shortly after dosing Mild injection-site redness or irritation Transient headache Brief mild nausea Short LH and FSH rise, usually followed by a return toward baseline Possible testosterone rise after longer exposure in men, if the testes respond to LH Theoretical and chronic-use risks Signal fade with repeated or nonstop exposure

GHK-Cu had a higher collagen responder rate (70% vs 40%) in the only direct comparison, and showed 55.8% wrinkle volume reduction at eight weeks in a split-face trial

GHK stands for glycyl-L-histidyl-L-lysine