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While encouraging, this studys retrospective design, lack of placebo control, small sample size, and subjective outcome reporting limit its interpretability
Inject in the morning and do the serum at night, or serum with your morning routine and inject in the afternoon
Your tissue sits at a pH around 7.4, and reconstituted GHK-Cu often falls outside that range, which activates your nociceptors (pain-sensing nerves)
Beyond visual cues, time matters
For anyone concerned about copper toxicity from GHK-Cu use, the data is reassuring
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