The reviewer, Kanykei, shared her positive experience with the Bian Stone Gua Sha by YINA in her video review. She described it as a "gym for the face" that helps with muscle toning and reducing fat. Kanykei mentioned that she noticed a difference in just a few days, particularly in balancing her asymmetrical face. She appreciated that the product came with a cover and clear instructions, ensuring that users won't feel lost. Overall, Kanykei expressed her love for the product and its packaging. The Bian Stone Gua Sha by YINA seems to be an effective tool for facial muscle stimulation and achieving a more balanced appearance.