ghk-cu copper peptide hair growth evidence clinical trial GHK-Cu Peptide Therapy: The Definitive Clinical Copper peptides vs. minoxidil: which

Reading Each Dose on the Ladder Trial and clinical protocols seek the lowest dose that keeps the relevant markers moving without unacceptable side effects

And for arms, that really isn't the area of the body

Curr Neurovasc Res 10(4):415424 Dugger BN, Dickson DW (2017) Pathology of neurodegenerative diseases

Patients may experience fewer episodes of loose stools, less cramping, and improved nutrient absorption

Dosing: Common protocols involve 5-10 mg daily for 10-20 days, repeated several times per year

This is called "tenting" the skin, as it should somewhat resemble an erected pup tent (also known as a shelter-half)