I recommend the Daiso foundation brush.

The makeup brush I am currently using is the Daiso foundation brush (3,000 won). I used to apply foundation only with a puff, but I bought this product to try a new tool. The bristles are wide and dense, so they absorb product well, and because the material is soft, I can apply foundation without irritation. I also use it to apply blush, not just foundation. I used to apply it only with my fingers, but since I use the foundation brush to brush the product evenly, it applies so well without clumping, which I love. Honestly, I didn't expect much because it was cheap and a Daiso product, but it is a great product with excellent value for money. Lately, I've been sweating a lot, so I plan to use it to apply powder to my face as well. Since it doesn't cost much, it is a product worth getting one of!