Simple Answer: The Pulsar's IPL technology allow treatment to be pain-free!Detailed Answer: It is recommended that higher intensity settings be used for lighter skin types and lower skin settings be used for darker skin types, as explained in detail in the Pulsar User Manual. Therefore, when used with the right setting, the only sensation that a user might feel is slight warmth in the area that has just been flashed. Once an area has been flashed using the Pulsar, avoid flashing the same area repeatedly. Please note that since the pulsar uses IPL technology, as is the case with all IPL devices, it cannot be used on broken/irritate skin, areas that are infection, areas that have been burns, on moles or tattoos.