Role of IGF 1 in the Growth Hormone IGF Axis Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Autophagy and the Insulin like Growth Factor (IGF) System in Colonic Cells: Implications for Colorectal Neoplasia Loose skin isnt about age alone., Its about collagen signaling., GHK Cu (copper peptide) is known for supporting pathways involved in:, Collagen and elastin production, Skin remodeling and Project of Wound Healing Peptide