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The Vitamin C AntiOxidant Serum by USTAWI is receiving high praise from Irene in her video review. After using it for two months, she has noticed a significant improvement in her skin. Irene mentions that her skin looks brighter and more even, with fading dark marks in particular. She appreciates the serum's consistency and the convenience of its pump. Irene is so impressed with the results that she is eager to try other products from USTAWI. Overall, she highly recommends the Vitamin C AntiOxidant Serum for anyone who wants to achieve amazing results for their skin.