best ghk cu serum reddit Skin Perfection GHK-Cu Copper Peptide Booster, Guatemala GHK-Cu Peptide Serum Skincare 2
Description
You just injected 5mg instead of 2.5mg

Here's what the clinical data says about it
Obesity 31 , 96110 (2023)

Erythropoietin production in kidney tubular cells