The Philips InfraPhil produces infrared light, which penetrates deeply into the skin and warms the tissues.The warmth modulates the neuronal signals to the brain and thus reduces pain. Warmth also stimulates the blood circulation and dilates the blood vessels, which accelerates the transport of substances necessary to rebuild and nourish the body’s tissues. Furthermore, infrared light speeds up the metabolic process and the removal of waste substances from the body. Because it makes tissue more pliable, warmth also reduces stiffness and makes joints more flexible. Because of these effects, treatment with the InfraPhil can temporarily relieve pain due to muscle and joint problems, and it is suitable for cosmetic use.