Is GHK-Cu supposed to be blue?

Yes, GHK-Cu liquid is normally blue. The copper held by the peptide soaks up light in a way that makes that color. That is a normal, expected trait of the compound, not a sign of germs or breakdown. A liquid that is not blue, at a strength where blue is expected, would be the thing to question.

Copper peptides for skin and hair: what real people saw

Copper peptides for skin and hair: what real people saw

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of healing and recovery peptides. BPC-157, TB-500, GHK-Cu, and the tissue repair family, including what actually has human data.