From a pharmacokinetic perspective, topical GHK-Cu has a distinct advantage: it acts locally rather than systemically
The practical takeaway: if a patient presents with hair thinning, skin aging, and slow wound recovery, GHK-Cu is the right primary peptide
That is why millions of people gobble supplements like vitamin E and beta-carotene each year
It is an antioxidant in plants, animals, fungi, and some bacteria and archaea
The peptide does not interact with hormonal pathways, making it one of the few compounds where sex-based dose adjustment is unnecessary
Some ingredients (like strong acids or vitamin C) can interact with copper peptides, so many people separate them, using one in the morning and the other at night