Obagi-C Rx Skin Health System The comprehensive system includes a Cleansing Gel, Clarifying Serum, Exfoliating Day Lotion, SunGuard, and C-Therapy Night Cream with vitamins C & E. The elements of this treatment are easily incorporated into your morning and evening skincare regimen, as shown below. Morning: Step 1: C-Cleansing Gel: Prepares and conditions skin to optimize penetration of the system Enhances skin clarity 6.0 fl. oz. (180ml) Step 2: C-Clarifying Serum First and only 4% hydroquinone + vitamin C serum with L-ascorbic acid vitamin C Penetrates the dermal layers to reduce melanosome activity while promoting more even skin tone and providing potent antioxidant therapy 1.0 fl. oz. (30ml) Step 3: C-Exfoliating Day Lotion Exfoliates the stratum corneum to enhance penetration of active ingredients Brightens and smoothes skin Antioxidant activity neutralizes free radicals and prevents future damage 2.0 fl. oz. (57ml) Step 4: C-SunGuard SPF 30 Prevents premature aging from UVA/ UVB radiation Protects skin radiance 3.0 fl. oz. (90ml) Evening: Step 1: C-Cleansing Gel Conditions and prepares skin for better penetration of entire system Removes makeup, excess oil and impurities Enhances skin clarity 6.0 fl. oz. (180ml) Step 2: C-Therapy Night Cream Optimizes natural renewal cycle of the skin at night Reduces irregular melanosome activity while providing potent antioxidant therapy with vitamins C and E 2.0 oz. (57g)