injectable vs topical ghk cu GHK-Cu Copper Peptides: GHK-Cu Dosing: 1.7mg/Day Injectable (2026)

A doctor will inject the shot into the muscle or deep into the skin

[PubMed] [Google Scholar] 108.Hagiwara M., Endo T., Hidaka H

Alternate between multiple sites to prevent lipohypertrophy (fatty lumps under skin), reduce scar tissue formation, and maintain consistent absorption

I'll warn you though: kind of like online pharmacies, the websites are cheesy, and they technically aren't allowed to sell or advertise these kinds of peptides as something appropriate for human consumption or human injection, but you can pretty easily find it and buy it if you know how to use your Googling skills properly

Several personal anecdotes praise its benefits in various areas