How to deal with the black edge of shoes?

1. We just need a little toothpaste. We squeeze this toothpaste to the edge of this shoe, and then we can pick up the toothbrush or shoe brush and start brushing.

2. With a brush, a lot of dirt has floated down by itself. We only need to brush it a few times, and it will become very clean.

Then we can pick up the rag and wipe it again.