1. Soap containing a little mixture of ammonia and turpentine can remove a lot of dirt.
2. Repeatedly stick and tear with transparent adhesive. You can remove some surfaces.
3. Wipe it off with a little dilute sodium water, or use paint thinner.
You can blow-dry it with a hair dryer and then scrape it gently.
5. Wipe with a cotton swab dipped in nail polish remover.
6. Wipe with essential balm.
7. Wipe with special cleaner or sports shoes decontamination cream.
8. You can erase it with 4b eraser for painting, which is a very soft Korean eraser.
9. If it is a lasting trace that has hardened, you can soften it with a hot towel first.