TB-500 adds angiogenic, actin-control, and ILK-start signals while BPC-157 adds gut cytoprotective, tendon fibroblast, and systemic NO-pathway effects
Topical GHK-Cu application: Topical formulations sidestep syringe selection entirely, but they require a minimum peptide concentration of 0.1 to 1% by weight to penetrate the stratum corneum
You also shouldnt shave the treated area after treatment until it has fully healed
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Mixing GHK-Cu with BPC-157 in the same syringe, if running a broader protocol, also reduces injection site irritation per reported user experience
For the broader category context on multi-mechanism metabolic peptides, see Triple Agonist Peptides Explained: Retatrutide, GLP-3, and the Future of Metabolic Research