round brushes. this kind of brushes has bristles all around its perimeter. normally they are used to gives shape to the hair when you dry it. you can create curl, waves and you can get a perfect straightening. the thermal brushes are a kind of round brush but with metallic bristles. when it is hot, ot acts like a roller helping to create curl easier. they are brushes with different sizes and you will be able to create different curl with them.