LED Light Therapy is the use of specific types of light which give off energy that stimulates your cells, thereby increasing the production of collagen and elastin. In turn, this makes your skin firmer, less wrinkled, and younger looking. This is known as LED Light Therapy. LED stands for Light Emitting Diode. Diodes give off energy in the form of light. These little diodes are compact, durable, powerful, bright, efficient, and when used in combination with LightStim’s patent pending engineering, produce rejuvenating effects on the skin.