Hair-improving brush

This is the Tangle Teezer hair brush that was popular a while ago. The teeth aren't too fine, so it combs smoothly. I bought it out of curiosity because I heard that just brushing improves hair quality, and after using it for a long time, my hair has become calmer. Frizziness has improved a lot, and most importantly, the volume at the roots seems to come alive. Even without blow-drying, my hair feels calm and bouncy, and since the brush itself is soft, it doesn't hurt my scalp, which I like. If I just brush and dry it, it stays neat without needing much styling.