The answer depends on a lot of factors and your tolerance to pain. The hair color and thickness are important too as you might feel more pain if you have thick hair. Tria hair removal might be painful for people who have sensitive skin. Also, the higher the energy setting you use, the more effective the device is. But the device produces more heat on higher levels which might make you uncomfortable. Most people who used Tria 4x on level 5 found it painful. They had to use numbing cream or ice pack to reduce the pain and comfort the skin. While people who used it on level 1 and level 2 found it more tolerable. We recommend using the device on level 1 or 2 for the first 2 sessions. After that, you can switch to higher energy levels. If you feel pain during the treatment consider changing to a lower level to avoid skin redness.