In Japan, it is priced even lower at $69
Ocular hypertension triggers the production of pro-inflammatory cytokines by immune cells, which in turn drives the transformation of neuroprotective astrocytes into a neurotoxic A1-reactive phenotype, ultimately leading to RGC degeneration [45]
tl;dr More medical studies are needed, but up to 2 grams a day seems safe for most people
*Based on a clinical study conducted with 36 volunteers by an independent lab in September 2025 Aqua, 3-O- Ethyl ascorbic acid, Propanediol, Propylene glycol, Betaine, Glycerin, Glyceryl Glucoside, Glutathione, Phenoxyethanol, Squalane, Sodium Acrylates Copolymer, Lecithin, Undecylenoyl Phenylalanine, Allantoin, Tocopherol, Carbomer, Ethylhexylglycerin, Octenidine HCl, Disodium EDTA, Triethanolamine, Allergen free fragrance Aqua, 3-O- Ethyl ascorbic acid, Propanediol, Propylene glycol, Betaine, Glycerin, Glyceryl Glucoside, Glutathione, Phenoxyethanol, Squalane, Sodium Acrylates Copolymer, Lecithin, Undecylenoyl Phenylalanine, Allantoin, Tocopherol, Carbomer, Ethylhexylglycerin, Octenidine HCl, Disodium EDTA, Triethanolamine, Allergen free fragrance Vegan Paraben Free Dermatologically Tested Cruelty Free Sulfate Free Users report early improvement in dullness with consistent use
, Knudsen, L