Our little man had to get a helmet at about 5 months old. Long story short, his head is a bit flat in the back so if he undergoes this treatment it is supposed to help correct the problem. It is mostly for cosmetic reasons (heaven forbid he doesn't forgive me if he goes bald!) but it can also cause ear, jaw and other health issues if it's not corrected. He had the helmet from May-September but he looked so cute in it! We had to travel back and forth to Lombard quite often but it was worth it! Daddy Jesse even hand painted it to make it look like a boxing helmet!