glutathione with vitamin c oral solution 25% + Clinical Serum for Brightening & Dark Spots Glutathione Face Serum with Kojic

Thats a completely different clinical outcome

doi: 10.3390/jcm9082531 332 Martnez-MartnezL-AMoraTVargasAFuentes-IniestraMMartnez-LavnM

However, the U.S Food and Drug Administration (FDA) has warned against using glutathione for this purpose because the shots might contain unknown harmful ingredients or contaminants (14)

How Glutathione Injections Support Skin Brightness Glutathione works primarily by reducing oxidative stress

In research settings, AOD-9604 is studied for its interaction with pathways associated with fat metabolism and cellular energy regulation, without direct activation of broader growth-hormone signaling systems