Here is a goal: How to soften a hardened paintbrush to paint with?

How would you accomplish this goal?

OPT:
- Place some vinegar in a baking pan and heat the paintbrush on the stove, then pour the vinegar over the paintbrush and let it sit for 10 minutes before combing away the paint with some wire;
- Place the paintbrush in a baking pan and heat some vinegar on the stove, then pour the vinegar over the paintbrush and let it sit for 10 minutes before combing away the paint with some wire;
Place the paintbrush in a baking pan and heat some vinegar on the stove, then pour the vinegar over the paintbrush and let it sit for 10 minutes before combing away the paint with some wire