IPL, Intense Pulsed Light, is a light based treatment that is commonly used for hair removal. The light that is emitted is absorbed by the pigment in the hair, which kills the growing cells that make the hair grows. This is effective for darker and coarser hair. The light emitted during the hair removal penetrate deep within the skin, targeting the melanin that causes the dark pigment. When the light reaches the hair root, it heated up and destroy the follicle that contributes to hair growth.