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One study evaluated 15mg/kg GHK-Cu given three times weekly for 3 months (treatment started in 4-month-old mice and given until 7 months of age)

Delivers the optimal nourishment to help strengthen and replenish skin's moisture barrier, keeping vital nourishment in and environmental aggressors out

Nature Communications

As fixed effects we added time and treatment-dose effects with interaction

HPLC identity, purity, mass spec, sterility, endotoxin

People who exercise vigorously create oxidative free radicals, which can lead to muscle fatigue and decrease muscle performance suggesting that an antioxidant may be helpful