Ultrasonic devices feature vibrations of up to 30,000 Hz, which basically “jiggles” out impurities from the pores as it exfoliates the surface of your skin. It’s also designed to make your favorite skin care serums penetrate your skin more deeply for for maximum absorpUltrasonic devices feature vibrations of up to 30,000 Hz, which basically “jiggles” out impurities from the pores as it exfoliates the surface of your skin. It’s also designed to make your favorite skin care serums penetrate your skin more deeply for for maximum absorption and effectiveness.tion and effectiveness.