Rex-Kara is a technical anti-aging skin care system that utilizes synchronous ultrasound, galvanic ionization, and infrared technology to deeply deliver active agents into the skin for effective cleansing and rejuvenation. It addresses various skin concerns including aging, acne, and problem areas, with visible results often seen after just one application. The system includes a range of specialized products designed to complement its technology and is suitable for home and travel use.