Antioxidants are either soluble in lipids/fat (hydrophobic) or water (hydrophilic). Both of these are required by your body in order to protect your cells, since the interior of your cells and the fluid between them are composed of water, while the cell membranes themselves are mostly made of fat.
Water-soluble antioxidants are found in aqueous fluids, like your blood and the fluids within and around your cells (cytosol or cytoplasmic matrix). Some examples of water-soluble antioxidants are vitamin C, polyphenols, and glutathione.
Choose from the below list of water-soluble anti-oxidants to compliment other fat-soluble antioxidant products you might be taking.