In a 12-week clinical study involving 71 women, GHK-Cu cream was observed to increase skin density and thickness while reducing fine lines
Visibly fades dark spots, post-blemish marks, and hyperpigmentation with targeted patch application
Instead, its research-relevant effects appear to involve modulation of several signalling pathways most prominently angiogenesis via the VEGF pathway, gastric and gut-lining protective signalling, and to a lesser extent growth factor modulation and nitric oxide system interaction
Consequently, this leads to a reduction in the flux toward methionine-derived metabolites and redirects cysteine utilization toward glutathione, thereby enhancing plant protection
Hence, the rationale for a UL that refers to all stereoisomers of -tocopherol is based on the fact that any form of -tocopherol (natural or synthetic) can be absorbed and thus be potentially harmful
This indicates that the effects of glutamate on intestinal function are not solely exerted through conversion into glutamine