Laser hair removal is, technically speaking, epilation by laser or with the use of a special light. Besides the body, certain types of laser hair removal may safely be used to reduce facial hair as well. The laser (or light) of a particular wavelength is used to cause damage to dark elements in hair follicles. These elements are referred to as chromophores. They can be artificially produced or naturally occurring.
Today, most techniques target naturally occurring chromophores, in particular, melanin. Melanin gives colour to both hair and skin. Of the former, there are two types: eumelanin and pheomelanin. Eumelanin gives a brown or black colour. The latter gives a blonde or red colour. Since the dark matter in hair follicles are the target, only the former – darker – type of hair is suitable for this procedure.
While laser hair removal became a commercial cosmetic procedure about 10 years ago, it has been experimented with well before then. In fact, medical lasers have been used to remove dark spots, acne scars, other types of skin blemishes and even tattoos. The point about laser hair removal is that, it’s not permanent. In fact, in countries...