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It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture
Published research protocols rarely exceed 4 mg per day injected
Volume depends on concentration
That distinction matters more than most surface-level content about GHK-Cu tends to acknowledge
"If your goal is skin tone and radiance, that range moves up toward 500 to 1,000 milligrams a day." Anywhere between 250 milligrams and 1,000 milligrams is the sweet spot, according to most experts
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