The high frequency facial machine is a device for skincare treatment usually found in skincare clinics that’s used to help treat various facial skin problems. It is considered as a safe facial skincare tool but if you are not a professional esthetician, you must read and follow its general usage, instructions and precautions. You can use the high frequency facial machine directly on your bare skin, but sometimes others use it over gauze or a cream for easier glide over the face.