I use a razor.

It's been so long I don't even remember when or where I bought it, haha. I heard it was 2,000 won for 5+2, haha. And look, there are still two left like this. They say it's made in Greece, hahaha.

While I was thinking about it, I replaced the razors in both bathrooms with new ones. I find razors convenient. You just have to glide through them while showering.