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AHK-cu is a copper-binding tripeptide composed of the amino acids alanine, histidine, and lysine combined with a copper ion
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emollient adjuncts or reduced application frequency often mitigate this effect
[7] When combining GHK-Cu with other scalp prescriptions (e.g., minoxidil or topical retinoids), clinicians may recommend alternating schedules to minimize cumulative irritation, although controlled interaction studies are lacking
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