Revitalize dull, lackluster skin with these two vitamin C superheroes. Vitamin C Cream A daytime, lightweight moisturizer formulated with 10% Vitamin C (Ascorbic Acid) works to revitalize dull, lackluster skin by helping to visibly brighten tone, improve skin’s elasticity, and achieve a glowing, more youthful-looking complexion. Vitamin C Serum The Mario Badescu Vitamin C Serum is a lightweight, antioxidant-enriched serum made for both oily and dry skin types and designed to encourage a more radiant and youthful-looking complexion.