The application of visible light, or the colour spectrum, is known as chromotherapy, or "light therapy," and it is used to promote tissue regeneration and healing. Light is electromagnetic radiation, which is energy released in the form of particles or waves. Every colour in the spectrum has a distinct wavelength that affects our bodies differently. Chromotherapy is a treatment for inflammatory or swollen tissues. Chromotherapy eases discomfort, promotes healing, and relaxes muscles by applying coloured light to the affected areas.