DMSO Gel - 4 oz DMSO (Dimethyl Sulfoxide) Gel 99.9% Pure net weight 16 oz. Active Ingredients: Dimethyl Sulfoxide ......................... 90% Caution: In case of allergic reaction to skin flush with water, then, if necessary, call physician. Do not take internally. Keep out of reach of children. Sold for use as a mild solvent only, not approved for human use.