Use this sponge.

When patting on face foundation

I've tried using a brush, my hands, and various other methods, but

It couldn't keep up with this.

It's the Chunsik sweet potato sponge sold by Kakao.

It's really good. If you wet it with water, it swells up thickly.

If you pat it on your face then, wow, is this skin or just cake? lol

It fits perfectly. I highly recommend it, everyone.

The color looks appetizing, just like a sweet potato..