How would you like to increase the effectiveness of your sunscreen while improving your skin? “Vitamin C serum kills free radicals—which trigger the aging process—and gives you seven times the protection of sunscreen alone,” says Tresa A. Candelmo, owner of Philomenas Beauty Boutique, located at Static hair salon (189 Mamaroneck Ave, White Plains 914-997-2600; www.philomenasbeautyboutique.com). Candelmo recommends PYHTO-C Skin Care which, in addition to vitamin C, contains vitamin A, vitamin E, and selenium. “The selenium in the C serum not only prevents UV damage, but promotes DNA repair,” she says. Candelmo also likes SkinCeuticals, which comes in varying strengths of vitamin C. For maximum effectiveness, apply it to your skin just after cleansing, before putting on your makeup.