Whenever white shoes are washed and dried in the sun, they can easily turn yellow. They must oxidize when they are exposed in the air for long. Other reason may be the detergent that the shoes still contain (because they haven’t been rinsed properly) which produces a chemical reaction under the sun when airing. Well, we can do this guessing all day, but solving the problem is much easier. Fortunately, we can maintain that whity-white look of our shoes with some household tricks.
Soak the shoes in water and then clean the soles with the brush. Soles are the dirtiest part and the water will become dirty if you put the shoes into the water without cleaning them first.
Smear some whitening toothpaste on the brush and then brush the shoes. You will find that the shoes become white by brushing.
Wash out the shoes after brushing them. You had better soak the shoes in water for a few minutes and soak the toothpaste out.
Keep In Mind: white shoes turn yellow because you don’t rinse detergent out completely when washing the shoes. The shoes still contain such detergent and they turn yellow after drying. Therefore, soak the shoes for a few minutes at the start.
Drain the shoes after soaking for several minutes, and then cover the shoes with white tissue without leaving any gap at all. After the shoes dry, you will find that white paper become yellow. The shoes become white after taking the tissue off.
Covering the shoes with tissues after washing is effective to keep white shoes from turning yellow.