SPL Set ID: e5c450af-958e-41e3-9c2f-fda76b3596f5

Hydroquinone is 1, 4-benzenediol. The drug is freely soluble in water and in alcohol. Chemically, hydroquinone is designed as p-dihydroxybenzene; the empirical formula is C 6 H 6 O 2 ; molecular weight is 110.11 g/mol. The chemical structure is in the diagram below. Each gram of Obagi Nu-Derm Clear contains: Active ingredient: Hydroquinone USP, 4% (40 mg/g) Inactive ingredients: water, cetyl alcohol, glycerin, sodium lauryl sulfate, stearyl alcohol, lactic acid, tocopheryl acetate, ascorbic acid, sodium metabisulfite, disodium EDTA, methylparaben, BHT, propylparaben, saponins, butylparaben Each gram of Obagi Nu-Derm Blender contains: Active ingredient: Hydroquinone USP, 4% (40 mg/g) Inactive ingredients: water, glycerin, cetyl alcohol, PPG-2 myristyl ether propionate, sodium lauryl sulfate, TEA-salicylate, lactic acid, phenyl trimethicone, tocopheryl acetate, sodium metabisulfite, ascorbic acid, methylparaben, disodium EDTA, propylparaben, saponins, BHT Each gram of Obagi Nu-Derm Sunfader contains: Active ingredients: Hydroquinone USP, 4% (40 mg/g); Octinoxate USP, 7.5%; Oxybenzone USP, 5.5% Inactive ingredients: water, cetyl alcohol, glycerin, sodium lauryl sulfate, stearyl alcohol, tocopheryl acetate, ascorbic acid, sodium metabisulfite, disodium EDTA, methylparaben, BHT, saponins, propylparaben, butylparaben Chemical Structure