ghk cu topical vs subq GHK-Cu might be trending, but it's not new. Before you inject yourself with this viral peptide, consider this. This copper peptide has been studied for years in skin repair and collagen signalling Unlocking the Secrets of GHK-Cu:
Description
Neurotrauma 27 , 18951903 (2010)

Pickart, Vasquez-Soltero, and Margolina used the Broad Institute Connectivity Map (CMap), a database that correlates small-molecule exposures with transcriptional signatures across human cell lines, to describe GHK's gene-expression footprint

This isn't just aging

Consumers taking unauthorized peptide drugs are exposed to a variety of risks, including, but not limited to, hormonal imbalance, mood swings, blood sugar imbalance, liver or kidney damage, blood clots, and growth of cancerous tumours

When in doubt, replace the vial