GHK-Cu is sold as a research compound and is not FDA-approved for human use
Endotoxin testing helps identify the presence of bacterial byproducts that could introduce unwanted variables into laboratory investigations
Human trials need to define the product, route, dose, comparator, outcomes, adverse-event collection, and follow-up before those claims can be tested reliably
This peptide is not approved for diagnostic, therapeutic, or medical applications
What AHK-Cu offers that minoxidil doesn't is that it supports overall scalp health rather than targeting a single pathway and there's no dependency concern - hair doesn't shed if you stop
Because B12 injections are given intravenously, there are no barriers to absorption, and they can begin working within hours