I got this pen to use on my dark pigmentation on my cheaks and sides of my face. I was a bit nervous at first, but the instructions and looking up videos on how to properly use this device really gave me confidence to do it. It wasn't too bad on pain and the end result was worth it for me. Two of the dark spots I had are completely gone, which were the lighter of them but prominent spots. I am really excited about these results and will be continuing to use this on my other spots.