Major Ingredients Water, Glycerin, Dipropylene Glycol, Propanediol, Hippophae Rhamnoides Water, Caprylic/Capric Triglyceride, PPG-13-Decyltetradeceth-24, Hydroxyacetophenone, Caprylyl Glycol, Carbomer, Tromethamine, Hydrogenated Lecithin, Glutathione(600 ppm), Cetearyl Alcohol, 1,2-Hexanediol, Disodium EDTA, Stearic Acid, Dipotassium Glycyrrhizate, Terminalia Ferdinandiana Fruit Extract, Butylene Glycol, Lecithin, Pentylene Glycol, Acetyl Glutamine, Sodium Hyaluronate, Polyglyceryl-10 Stearate, Panthenol, Folic Acid, Bacillus/Soybean Ferment Extract, Oligopeptide-1, Hexapeptide-11, Oligopeptide-2, Oligopeptide-3, Sodium Ascorbyl Phosphate, Hydrolyzed Pea Protein, Madecassoside, Phytosterols, Squalane, Olea Europaea (Olive) Fruit Oil, Tocopherol, Niacinamide, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Hydroxypropyltrimonium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Potassium Hyaluronate, Ceramide NP, Butyrospermum Parkii (Shea) Butter, Ethylhexylglycerin, Biotin, Sodium Hyaluronate Crosspolymer, Pyridoxine, Cyanocobalamin, Riboflavin, Thiamine HCl, Retinol, Bioflavonoids, Sodium Acetylated Hyaluronate, Menadione, Acetyl Hexapeptide-8, Copper Tripeptide-1, Palmitoyl Pentapeptide-4, Linoleic Acid, Beta-Carotene, Fragrance Ingredients subject to change at manufacturer's discretion

ProHealth is the most expensive option in this guide, with a base of $76.86 and 30 servings ($2.56 per serving), while Thorne has the second-highest price point at $47 and 112 servings ($0.21-$0.42 per serving depending on your preferred serving size)
This correlates with the timeline of mitochondrial GSH depletion
Other techniques including immunohistochemistry and immunogold can further evaluate the levels of the various antioxidant enzymes in tissues and cells
APLB Glutathione Niacinamide Toner 160 ml is a brightening formula designed to hydrate, soothe, and enhance skin clarity.