Does it really look different after contouring?

Wow, what is contouring? What is what is what?

I kept wondering, so I looked it up on Naver haha.

It's makeup that adds shading to the face... lol

Wow, how far and in what ways are shading done these days?

In the past, I used to change the color just by using blush.

Even my somewhat broad face shape looked three-dimensional.

What color do you usually use?

I'm curious!