What method can be used to whiten shoes when they are yellow?

The ways to turn yellow and white shoes are as follows:

1. Use detergent, soap or washing powder, and apply a small amount of detergent to the brush to clean the yellow shoes.

2. Use bleach, soak the shoes in diluted bleach and clean them after about 2-3 minutes.

3. Use redox agent, soak shoes in redox agent, and clean them after about 1-15 minutes.

4. Use toothpaste. After cleaning the shoes with warm water, apply toothpaste and gently brush them with a soft brush.