HAIR GROWTH CONTROL METHOD AND APPARATUS FOR THE METHOD

摘要

A controlled light having a wavelength of 400 to 600 nm inclusive and an energy of 0.01 to 1 J/cm<SUP>2</SUP> inclusive is irradiated to a site around a hair root for 1 ms or shorter in the form of a flash light, thereby causing the absorption of the light by a biological light-absorptive component which occurs in the periphery of the hair root. Thus, the growth of hair can be controlled with causing little adverse side-effects.