LED Therapy is the therapeutic use of light to modulate cellular function to improve and quicken wound healing, treat acne, rejuvenate the appearance of skin, stimulate hair growth, improve local circulation, perform 5-ALA photodynamic therapy (PDT), and relieve pain and stiffness in muscles and joints.  The light is placed over the skin with no contact and is illuminated for a period of 15-30 minutes. This allows absorption of photons (light particles) into the target cellular components, resulting in the production of new cellular energy. The response of the inflammatory-stage cells is enhanced, and small proteins are released which support the growth, survival and differentiation of new cells.