GHK-Cu (Copper Peptide): Complete Guide for Canadian Researchers
What Is GHK-Cu? GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring copper peptide complex found in human blood, saliva, and urine. First isolated in 1973 by Dr. Loren Pickart, this tripeptide has become one of the most researched peptides for skin…

