The bristles of a toothbrush are very important. The SOLID ToothBrush has a lot of soft bristles. Lots of bristles that are very soft are the very best for your mouth. This is one of the points where we differentiate ourselves. In addition, there is charcoal in the bristles, this removes the tarnish from the teeth. This ensures that you get whiter teeth. Finally, you can use the back of the toothbrush to brush your tongue, which is very important.