I really like this 3D Bomb Curl Brush by Carejoy. I have medium length hair that falls flat. his brush helps me create volume and waves. It’s easy to use and I didn’t have any tangling issues. I’m one of those with an arsenal of beauty products looking for that perfect one. I have yet to find that elusive perfect item but meanwhile this brush will do and goes into my “keeping” box.
https://www.amazon.com/gp/product/B078T8YLQM/