D-TECH WILL REJUVENATE YOUR SKIN'S APPEARANCE AND STRUCTURE USING DUAL ACTION TECHNIQUES, RED LED LIGHT, AND TOPICAL HEAT. The limited edition has a combination of more Infrared LEDs that will supply effective treatment to all skin layers. The D-TECH RED comes with a lifetime warranty for both online and in store customers. The most powerful home use anti-wrinkle device. The D-TECH uses red and infrared LEDs. RED D-TECH uses LED (Light-Emitting-Diodes) technology, using red and infrared light that can effectively penetrates into the skin. The LED light is known to promote production of cells, collagen fibers and elastin. RED D-TECH treats all layers of the skin — epidermis, dermis, and all the way down to the hypodermis — from surface to core. The RED D-TECH treatment probe (metal head) will heat up to 40° to 42° Celsius (104° to 107° Fahrenheit) to provide topical heating that increases local blood flow at the treated area. Red and infrared light treatment is completely safe and has no reported side effects. RED D-TECH is clinically proven and was found safe to use.