What it is: A serum clinically proven to visibly reduce dark spots, age spots, and traces of past acne. What it is formulated to do: This lightweight, layering serum effectively evens skintone with a highly effective, yet safe and comfortable formula. According to clinical trials, this product delivers results comparable to a leading prescription ingredient. Notice the gorgeous results in as little as four weeks. What else you need to know: This formula is appropriate for all skin types—even sensitive skin that may not tolerate other treatments. For optimal results, follow with a moisturizer and a daily, broad-spectrum sunscreenDermatologist-developed to be safe, comfortable. Yet in clinical trials our serum was comparable to a leading prescription ingredient in visibly reducing dark spots-a verified 58% improvement at 12 weeks. For all skin tones: See results starting in just 4 weeks, with a visible reduction in age spots and acne scars. Also appropriate for backs of hands and chest, too.