can you use injectable ghk cu topical GHK-Cu Copper Peptides: vs 5 GHK Cu Peptide Injection

It is a pig-brain extract, which sounds like exactly what it is

Quantitative assessment of primary skin irritants in vitro in a cytotoxicity model: comparison with in vivo human irritation tests

Reliable clinical studies investigating the effects of peptides on patients, both human and animal, require precision dosing

In his foundational report with Thaler, a tripeptide purified from human serum was shown to prolong the survival of cultured normal liver cells while also stimulating growth in neoplastic (hepatoma) liver cells an early hint both of the molecules regenerative signaling and of the fact that its growth-modulating activity is context-dependent rather than uniformly benign