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This copper-chaperoning function contributes to GHK-Cu's observed effects on antioxidant defense and tissue structural integrity in research models
Gastroenterology 162 (5), 13961408
Classical homocystinuria: From cystathionine beta-synthase deficiency to novel enzyme therapies
Other (less serious) concerns are if EGF can properly penetrate the skin (as it is a medium-sized, polar molecule, so a special delivery system is probably needed), if it can affect collagen synthesis (or just works on the surface plumping up only the upmost layers of the skin) and if it has beneficial effects at all when used in isolation versus when used in a "conditioned media" that contains lots of growth factors resembling the synergistic balance found in the skin
Don't take 2 doses at the same time
PMID: 265572 Monnier M, et al
