Intense pulsed light therapy works by emitting light that gets absorbed by certain skin cells called chromophores. After these cells absorb the light, they transform them into heat that damages the unwanted skin cells in the target area.
Intense pulsed light therapy works similar to lasers. They both target intense light into skin cells. However, intense pulsed light therapy differs from lasers by delivering many wavelengths per pulse of light instead of just one wavelength. The filter used depends on the area of the body. This enhances penetration without using excessive energy levels.