In terms of washing (how to deal with and restore the yellowing of the rubber soles of white travel shoes?)

For sneakers and sports shoes

To fundamentally eliminate the cause of yellowing of shoes: first, try to use neutral detergent (toothpaste is a good choice) when brushing shoes, and wash them well When drying, you can wrap your shoes with white paper (preferably white toilet paper). When the shoes are dry, you will find that there are no yellow marks on the shoes, but there are many yellow marks on the toilet paper. In addition, if you wait until the shoes are very dirty before brushing them, you must use detergent to clean them. Use a soft cloth dipped in clean water to wipe them frequently and use less detergent.

If the shoes have turned yellow, you can buy lead powder in the store to brush them, wash the shoes, brush them while the shoes are wet, and then wrap them with paper to dry them to ensure that your shoes are as white as white. new. Take a look at the boots of the Peking Opera actors. The boots are absolutely white, because they are painted with lead.

Water with bleaching effect such as 84 should be used with caution as it is corrosive.