Acne Control Post-Acne Spot Lightening Gel is made from: Active Ingredient: Hydroquinone 2.0%. Inactive Ingredients: Water (Aqua), Alcohol Denat., Glycolic Acid, Butylene Glycol, Glycerin, Methyl Gluceth-10, Aloe Barbadensis Leaf Juice, Salix Alba (Willow) Bark Extract Lecithin, Magnesium Ascorbyl Phosphate, Tocopherol, Palmitoyl Hydroxypropyltrimonium Amylopectin/Glycerin Crosspolymer, Vitis Vinifera (Grape) Seed Extract, Rice Amino Acids, Chitosan Ascorbate, Lysine Lauroyl Methionate, Zinc Asparate, Allantoin, Melaleuca Alternifolia (Tea Tree) Leaf Oil, Dipotassium Glycyrrhizate, Polyquaternium-10, Hydroxyethylcellulose, PEG-40 Hydrogenated Castor Oil, Tetrasodium EDTA, Sodium Metabisulfite, Sodium Sulfite, Sodium Hydroxide.