Before starting any injectable protocol, confirm the correct route with your prescribing clinician
The following additional adverse reactions have been reported rarely: vitiligo depigmentation, small depigmented spots, hypertrichosis, reddening (signs of keratosis pilaris), and exacerbation of recurrent herpes viral infection (i.e., herpes labialis)
Yant LJ, Ran Q, Rao L, Van Remmen H, Shibatani T, Belter JG et al (2003) The selenoprotein GPX4 is essential for mouse development and protects from radiation and oxidative damage insults
The antioxidant properties of glutathione will give you a more pleasing skin tone
GHK-Cu is stable at physiological pH (6.57.5) but dissociates below pH 4 or above pH 9, releasing free copper, which can be pro-oxidant if unbound