It was a Nobel Prize in 1908 for phototherapy for lupus, so it's not a new thing, the idea that red light and light could do things positive for our biology
Pierini, L
Skin and hair also rely on protein, iron, zinc, vitamin D, and vitamin C, and gaps can show up as shedding, slow wound repair, and fragile nails that split
The importance of thiol-reactive molecules like NAC and GSH in SARS-CoV-2 infectivity has been shown recently (Murae et al., 2022)
This differential regulation allows therapeutic benefits without common side effects associated with NO manipulation
Glutathione purifies the body of toxic substances, peroxidases, heavy metals, poisons from fuel combustion and tobacco