Chromophore means color bearing. Infrared light can pass through the body. Infrared is also known as heat light. You can get infrared heat from an electric or gas heater. The only known effect of infrared light on skin is dilation of blood vessels that transport blood to and from the skin for cooling.
Electrologists use the electricical energy to produce a chemical change within the hair follicle.
This is accomplished by attaching an electrode carrying a positive charge of electricity that is conducted by the electrolytes that react like metals in the body. The tiny electrode inserted into the hair follicle carries the negative flow of energy. The current flows from negative to positive. The chemical change that begins at the location of the negative electrode is called ionization. These gases rise to the epidermis during treatment with direct current, bringing follicular debris along with them.