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HYDROQUINONE 4%
Strong inhibitor of melanin production that has long been established as the most effective ingredient for reducing and potentially eliminating melasma.
L-ASCORBIC ACID 10%
Known as the purest form of Vitamin C, L-ascorbic Acid helps neutralize free radicals, minimize the look of fine lines and wrinkles, and brighten skin tone.
Each gram of Obagi-C Rx C-Clarifying Serum - Normal to Dry contains the following ingredients. ACTIVE INGREDIENT: hydroquinone, USP 4% (40 mg/g) INACTIVE INGREDIENTS: propylene glycol, water (aqua), ascorbic acid, propylene carbonate, sodium lauryl sulfate