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The copper ion appears to stabilize and deliver GHK to cells

As we age it becomes depleted resulting in fatigue, mental fog, lack of concentration, inflammation/oxidative stress, dull and tired looking skin, decreased endurance, and increased symptoms of chronic disease

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The synergy might arise from the combined action of GHK-Cu in stimulating glycosaminoglycan production, promoting collagen synthesis, and HA's role in reducing collagen degradation by scavenging reactive oxygen species and inhibiting matrix metalloproteinases

Usually, headaches are mild and go away on their own

New England Journal of Medicine, 384(11), 989-1002