I recommend Etude brushes.

This is a brush product from Etude!! I mainly use it to brush my jawline!! The bristles aren't rough and feel gentle, so I really like it and have been using it well. Since it's quite famous, I think there are probably quite a few people using it. I've always thought Etude makes products with good value for money, and even with beauty accessories, Etude is truly amazing haha. I'm satisfied!