IPL (intense pulsed light) treatment is similar to laser treatment. 

Instead of only one wavelength of light reaching the skin, as in laser treatment, IPL penetrates the first layer of skin, called the epidermis, to treat the second layer of the dermis. This causes less damage to the skin’s outer layer. The damaged area beneath the first layer of skin is then removed by the body’s natural skin repair mechanisms, resulting in smoother and more youthful skin. Light energy is converted to heat within the skin by pigment layers, which destroys unwanted pigmentation and eliminates the appearance of freckles and other unwanted spots.