Given the scoping nature of the review and the heterogeneity of available evidence, study selection focused on identifying representative and clinically informative literature rather than exhaustive quantitative inclusion
Intracellular signaling mechanisms mediating ghrelinstimulated growth hormone release in somatotropes
PLoS ONE 4 , e4715 (2009)
Increase Foods With Vitamins C And E Vitamins C and E are antioxidants that help maintain the bodys supply of other antioxidants including glutathione (3)

According to a 2018 review, GHK-Cu as a cosmetic ingredient has demonstrated the ability to:3 Tighten loose skin Reverse age-related skin thinning Repair the skins protective barrier proteins Improve skin firmness and elasticity Reduce the appearance of fine lines and wrinkles Smooth rough skin Stimulate wound healing Lessen the appearance of photodamage (sun damage), hyperpigmentation, skin spots, lesions, and more Reduce inflammation and damage from free radicals Increase hair growth and thickness Additionally, in research from 2015, the authors noted that GHK-Cu may be able to stimulate collagen, regulate the skin remodeling process, attract immune cells to the site of an injury, and restore replicative vitality to fibroblasts (a cell that helps form connective tissue) in patients whove undergone radiation therapy for cancer.2 6 GHK-Cu isnt limited to topical/cosmetic forms, however
Doglioni, C