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Most of that research is preclinical rather than large human trials
Pre-clinical and cosmetic-research data describe increased collagen and elastin synthesis, fibroblast proliferation, improved barrier-protein expression, and reduced markers of oxidative stress following GHK-Cu exposure
The procedure is typically quick and comfortable, and most patients report little to no discomfort
[5] Human work described a sleep effect with a latency of about an hour but a duration of up to 20 hours
Whether you're recovering from an injury, dealing with persistent joint or tendon discomfort, or simply noticing it takes longer to bounce back after exercise than it used to, recovery plays a role in how active and healthy you feel