Combine Tesamorelin or CJC-1295/Ipamorelin (for fat mobilization) with GHK-Cu (for skin elasticity and collagen synthesis) to prevent loose skin during weight loss. The growth hormone support promotes lipolysis while copper peptides maintain dermal structure. Research in
Plastic and Reconstructive Surgery shows GHK-Cu significantly improves skin firmness and reduces sagging when used during significant weight reduction.