The topical GHK copper, however, is unrestricted and legally recognized as a safe cosmetic peptide
This has important clinical consequences, such as the lack of biological markers [7] and the hindered development of targeted pharmacological treatments
The cellular GSH is determined by the activity and characteristic of GSH-synthesizing enzymes, energy and precursor supply, and degradation of formed GSH
Pure glutathione can increase the regeneration of aging cells in the skin, improve skin cell metabolism, decrease the rapid aging of skin cells, and extend cell longevity, all of which help to prevent skin aging
However, unlike branded medicines, these compounds are not FDA-approved because no clinical trials have tested their safety and effectiveness
Glutathione steps in and offers its electron instead