The Dr. Brandt Power Dose C is a vitamin C based antioxidant serum. According to the brand, this product contains the highest possible concentration of stabilized vitamin C that is able to absorb into the skin. Vitamin C is one of the trickiest ingredients to formulate with because it oxidizes quite quickly. In order to prevent this, some brands have opted to use stabilized forms of vitamin C or vitamin C esters. This particular formula uses 20% ethyl ascorbic acid in order to deliver the brightening, smoothing and anti-acne benefits that vitamin C is known for. This formula also contains Kakadu plum extract, which contains 50 times more vitamin C than an orange, making it a great botanical extract to boost the already present ethyl ascorbic acid. Together, this product can help with several different skin concerns including fine lines and wrinkles, sun damage and hyperpigmentation.