More isn't better and may cause irritation
GH has been shown to promote the cell growth of the skeletal muscle by facilitating the fusion of myoblasts with nascent myotubes, and that IGF-1 expression in myotubes is not regulated by GH (207)
Oxidative damage to heart tissue often leads to heart disease, causing strokes, heart attacks, and other severe conditions
Clinical Translation: Subsequent studies have confirmed these laboratory findings in human subjects, showing that topical and systemic GHK-Cu increases measurable collagen deposition and improves skin structural integrity over 8-12 weeks of use
PubMed 3.Cerovecki T et al
Also, growth hormone levels drop as we get older, and there was interest in seeing if tweaking these levels might benefit older adults struggling with loss of bone and muscle mass and increases in body fat