If the solution shows any discoloration, cloudiness, or visible particles, it should be discarded immediately , as this may indicate contamination
Hrelec M et al
doi:10.3389/fendo.2019.00329 Sreeramaneni PGA, Yalamanchi A, Konda MR, Cherukuri SHV, Maroon JC
Product Specifications Synonyms : Copper peptide
The evidence base for TB-500 is thinner than BPC-157s, with essentially no human randomised controlled trial data (source)
Just apply a small amount to an out-of-the-way spot, like behind your ear, and wait 24 hours to see how your skin reacts