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. 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