Crafted to balance the radiance-boosting effects of vitamin C at the optimum potency so it doesn't damage skin barrier function or induce sensitivity, Dr. Barbara Sturm's The Good C Vitamin C Serum counters the effects of environmental aggressors, deeply hydrates and illuminates your skin. It harnesses a proprietary blend of 5% vitamin C in three skin-friendly forms: oil-soluble vitamin C THD; stabilized, synthetic vitamin C in glucosidic form and an extract from kakadu plum - a fruit that boast