The main difference between IPL and laser is the type of light used. IPL, or intense pulsed light, is a broadband pulse of light, while laser is a monochromatic light source. Both IPL and laser technology target the melanin in the hair follicles, and you can expect permanent results from both technologies. Energy, frequency, and hair color are all determining factors in the effectiveness of the treatment, while the light source (whether it is laser or intense pulsed flash) plays a minor role.