GHK CU NASAL SPRAYYour body already knows how to heal. GHK Cu tells it to remember. What Is GHK Cu GHK Cu (Copper Tripeptide 1) is a naturally occurring peptide found in human plasma, saliva, and urine. Levels peak in youth and decline sharply with age and with that decline comes slower recovery, accelerated tissue breakdown, and diminished cellular function. AEGIS delivers GHK Cu directly through the nasal mucosa bypassing gut degradation entirely for rapid systemic