Review Content 30 Second Smile Brush Heads The 30 Second Smile Brush heads come in both Soft and Regular bristles. I have used both, and prefer the Regular. The only complaint I have, is that the brushes dont spin very fast. In fact, they are pretty slow. Therefore, I have to go over my teeth a number of times to get them really clean. However, the brushing does only take about 30 seconds to complete, and I like that. Tough but tight Got the 30 second smile tooth brush system for Christmas. I use it every day at least once. The stems/shafts of the original brushes were pretty flexible and started to breakdown with heavy/vigorous use. These replacement brushes are a little stiffer, tighter and appear to be tougher. Think they will last longer. Best toothbrushes ever! These were purchased as extra brushes. I have not used these yet. I am extremely pleased with the toothbrush. It is the best one I have ever had in my life. Great Products! Five Star! Great toothbrush for those w/injury Ive been using these brushes for several years because of a broken hand. I got gingivitis and this brush saved my teeth. Anyone with difficulty using their hands can be successful with this brush. It provides cleaning of all teeth with proper pressure.