The effect is very good, and the effect of beauty instrument is supported by real data. According to the report of 985 University Research Institute, Yuruyi's RF function does increase the amount of collagen secreted by stimulating cells. According to the authoritative SGS test report, after 28 days of actual measurement, the density of dermis and skin elasticity increased obviously, while crow's feet and decree lines decreased obviously. Pei Ruyi was also recommended by most medical staff in Hong Kong. After personal experience, the medical staff in Hong Kong fully affirmed the effect of Yu Ruyi.