ahk cu peptide hair growth study ahk-cu Copper peptides (GHK-Cu) have been studied for decades for AHK-CU Dosage Guide: How Much
Description
It works intracellularly by inhibiting NNMT to preserve NAD+ and shift adipocyte metabolism a completely different mechanism, with different research read-outs

Oxidized or counterfeit material produces nothing

5-Amino-1MQ steps in as an NNMT inhibitor, effectively dialing down this enzymes activity

Months 4 to 6 and beyond: Real density change in responders
