Ahleessa 4 Realz has reviewed other Reviva products in that past, and has become a fan. But she didn’t realize how much her skin “needed” a product like Reviva’s Ultra-Potency Vitamin C+ Antioxidant Serum with Emblica. Air pollution results in nitrogen free radicals, and while most antioxidants simply fight oxygen free radicals (those resulting from the sun), Reviva has formulated a serum that contains an effective complex of antioxidants that includes Emblica – which fights the nitrogen free radicals.