ghk cu vs ahk cu ghk-cu hair growth topical study Comparison Hair Growth Skin Benefits 1 ratio to support skin Cosmetic peptide comparison: GHK-Cu vs
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[DOI] [PubMed] [Google Scholar] 160.Marsh DJ, Weingarth DT, Novi DE, et al
If you find the 45 unit mark uncomfortably small to read, the honest options are (a) use a finer-gradation syringe, or (b) follow a protocol built around the 50 mg vial, whose larger draw is more forgiving not to freehand a bigger volume from the 10 mg vial, which would silently overdose relative to the documented figure
This is why a real protocol is built in a consultation, not copied from an article
Nature: New biology, 243(124), 85-87
