My spots got so bad that I got dual toning. I don't usually take care of my skin at all, so I paid for 5 sessions of dual toning after hearing honest reviews about my skin. I've done it twice so far , and I can definitely feel that my skin tone has brightened. Starting with the 3rd session, the spots started to show up in earnest. He said he would bake(?!) it, so I'm really looking forward to it! I will receive up to 5 sessions and try pico toning near my house. If you have experience with both dual/pico toning, please compare the effects haha.