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For skin rejuvenation, 1 mg per day is typical

Evidence specific to athletic or bodybuilding use in healthy young adults remains limited and largely anecdotal rather than drawn from controlled human trials

Through a process called S-glutathionylation, glutathione also regulates major DNA repair proteins, such as the Ku70/Ku80 heterodimer used in Non-Homologous End Joining (NHEJ) to repair double-strand breaks

While GHK alone has some biological activity, it is the GHK-Cu form that is responsible for the vast majority of the regenerative, anti-inflammatory, and gene-modulating effects discussed in clinical research