ghk-cu hair growth clinical study human randomized for Growth: What the Evidence Actually Shows Ingredients — Hairgenetix | GHK-Cu,
Description
doi: 10.1038/s41467-021-25453-2

Assimakopoulos SF, et al

Zhang SJ, Yang W, Wang C, He WS, Deng HY, Yan YG, et al

A 5 mg dose = 0.50 mL (50 units)

Kennedy is actively working on human trials for this.