Taking a supplement is like pouring more water into the bucket
GHK-Cu is incorporated into serums, creams, and treatments at concentrations of 0.01-0.1% to improve skin elasticity, reduce wrinkles, enhance wound healing, and promote overall skin health
doi:10.1111/j.1532-950X.2003.00515.x Carroll DK, Carroll JS, Leong CO, Cheng F, Brown M, Mills AA, Brugge JS, Ellisen LW (2006) p63 regulates an adhesion programme and cell survival in epithelial cells
Theodoropoulou A, Koutroubakis IE (2008) Ischemic colitis: clinical practice in diagnosis and treatment
L-carnitine supplements While bioavailability of L-carnitine from the diet is quite high (see Dietary L-carnitine), absorption from oral L-carnitine supplements is considerably lower