J.K.
I swear by Mederma. They sell it at CVS and Target. My daughter sliced her forehead open on a table last summer and I followed the instructions completely. You have to use it a few times a day for a few months but it is so light now and flat, that I can barely see it unless I look. I really recommend it. It is about 10$ a tube but worth it. You really have to be diligent about it though.