Vitamins C + E + Ferulic Serum. This Product Is: . . an essential oil free, dual purpose serum that protects by day and repairs at night. . Good for:. all skin types, including dry, mature, sensitive, blemish-prone, combination and normal. Why We Love It: . Marie Veronique Vitamins C + E + Ferulic Serum is rich in antioxidants and is the upgraded, essential oil free version of an all time favorite Marie Veronique product. During the day, this serum helps provide sun protection by acting as a boost to your daily sunscreen while also working to neutralize free radicals. At night, the combination of vitamin C and tetrahexyldecyl ascorbate . (a potent c-derivative) works to provide nutrients to help repair skin and rebuild collagen. This powerful serum. promotes skin health and a radiant complexion, and replenishes the skin with antioxidants and is gentle enough for sensitive skin.. .