Obagi-C Rx Serum Obagi-C Rx Systems Over-the-Top Protection You Won’t Find Over-the-Counter With Obagi-C Rx, you’re on your way to healthier, refreshed, revitalized skin from cell to surface. Obagi-C Rx Systems promote skin rejuvenation from the inside out using a formulation of prescription-strength 4% hydroquinone, which reduces the appearance of hyperpigmentation and age spots, combined with 10% L-ascorbic acid (Vitamin C)—the only topical antioxidant proven to stimulate collagen synthesis and protect your skin by minimizing future skin cell damage. Obagi-C Rx Systems are ideal skin care if you have... Minimal fine lines Minimal unevenness of skin tone Mild hyperpigmentation and minimal age spots Intolerance to, or are not ready for, more aggressive anti-aging regimens Dry, normal, oily, or even sensitive skin Using the Obagi-C Rx 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 skin care regimen. 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.