Laboratory studies show GHK-Cu treatment results in improved hair shaft diameter, enhanced cuticle structure regularity, increased cortical density, and superior overall fiber integrity, translating into hair that appears thicker, stronger, and more resistant to breakage in experimental models
These are dietary supplements rather than research peptides, and they're readily available without the regulatory complexity of injectable peptides
If you don't start with a high-purity, accurately dosed peptide, no amount of perfect reconstitution will fix it
NNMT sits between NAD+ metabolism and one-carbon methylation metabolism, pathways that support redox reactions, DNA repair, and transcriptional regulation