Normally, when I blow out my hair, I use a big round brush, either ceramic or metal, vented or ventless. While I straightens my hair, it also adds a curl at the end. As someone with curly hair, sometimes I DON'T WANT A CURL!!! So I used today a hard bristle vented brush, flat, I guess. It was hard to pull the hair taught, so I had to wrap the hair around the brush, but my hair is completely straight. Okay, just thought I'd share!