The application of light therapy involves the use of visible or non-visible ultraviolet light to treat myriad of conditions. Light therapy is also known as Phototherapy, and it involves controlled exposure to specific levels of light. Light therapy has been extensively used to treat a variety of disorders such as depression, disruption in the biological sleep cycle, stress, anxiety, etc. Although primarily researchers used bright white light, recent studies, however, show that blue short wavelength light has better shape-shifting properties. Light therapy usually works best in the morning, mimicking the sun's natural cycle. There are no significant health risks from artificial light therapy. Be sure to consult your Doctor before beginning light therapy, especially, if your eyes or skin or both are sensitive to light. Also, do remember that a sunny spot in your home can too serve as a natural light box.