This is a professional-grade Ionic Aglex iontophoresis machine. It comes with the manufacturer's manual, so you can use it with confidence. It uses a weak electrical current to penetrate beauty ingredients, which are difficult to absorb otherwise, deep into the skin. Please use a serum that suits your needs. Although it's for professional use, it's a single unit, making it easy for beginners to use. The warranty period has expired, but the accessories are in good condition due to the machine's low usage. You can take care of your skin anytime at home, so don't miss this opportunity.