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AHK-Cu is a copper-binding tripeptide research compound

Its ability to penetrate the stratum corneum and deliver targeted benefits to deeper skin layers makes GHK-Cu a standout ingredient for nutraceuticals, serums, creams, and moisturizers

It is commonly studied because: It elicits potent growth hormone secretion Receptor affinity is higher It stimulates appetite only moderately The endocrine response is relatively stable A defining characteristic is its ability to induce strong growth hormone pulses while producing weaker hunger signals than GHRP-6

In males, the relative change from Pre to Wk5-Post (mean diff = 255