Because mitochondria control the ratios of NADH/NAD+, NADPH/NADP+, and GSH/GSSG, alterations in redox homeostasis have been proposed as a potential cause of ageing (Leeuwenburgh et al., 2011)

(2) Glutathione also plays additional key roles across many areas of human health: (3) Neutralizing reactive oxygen species (ROS), including harmful age-accelerating free radicals Serving as a cofactor for antioxidant enzymes Regenerating other antioxidants ( vitamin C and vitamin E) to fight free radicals again Helping to remove toxins and heavy metals from cells and the brain Supporting mitochondrial function and maintaining mitochondrial DNA for healthy energy As for its role in the immune system, aside from protecting cells from free radical damage, glutathione also protects human health in two ways: (4) Supports proper function of the T-cell lymphocytes to enable frontline soldiers of the immune system to increase in numbers Stimulates production and activation of natural killer (NK) cells Its also been shown to have a pivotal role in establishing innate immune responses, possibly acting as a signaling molecule with a mechanism different from simply scavenging reactive oxygen species

L-citrulline is also an amino acid found naturally in foods
Even the blueberries are upgraded
Water, Ascorbic Acid(23%), Propanediol, Dimethicone, Tromethamine, Panthenol, Ethyl Ascorbyl Ether, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Butylene Glycol, Arginine, Niacinamide, Pentylene Glycol, Alcohol Denat., Helianthus Annuus (Sunflower) Seed Oil, Glycyrrhiza Glabra (Licorice) Root Extract, Methyl Trimethicone, Carthamus Tinctorius (Safflower) Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Beta-Carotene Shake the bottle lightly once or twice from side to side and apply a few drops to the skin