It acts as a signaling and carrier peptide to promote conventional collagen, elastin, proteoglycan, and glycosaminoglycan synthesis and provides anti-inflammatory and antioxidant responses
Early wound healing studies demonstrated that GHK-Cu application to experimental wounds in animals accelerated healing, increased collagen deposition, enhanced wound breaking strength, improved tissue organization, and reduced scarring compared to controls

In addition, included were, i.e., 4-week intravenous toxicity in rats followed by 4 weeks of recovery, 4-week intravenous toxicity in dogs, sub-acute (14 days) intracolonic toxicity study in rats and Beagle dogs, a repeated dose (28 days) dermal toxicity study in Wistar rats, chromosome aberrations in human lymphocytes cultured in vitro, an Ames test, a micronucleus test, female fertility and early embryonal development after intravenous administration to rats, embryofetal development after intravenous administration to rats (including toxicokinetics in pregnant animals and placental transfer), embryofetal development after intravenous administration in New Zealand White rabbits, cardiovascular and respiratory systems in anesthetized dog, a sensitization study in guinea pigs (Maximization test), and an acute eye irritation/corrosion study in albino rabbits
Rotate your injection sites within the target area to prevent these issues