While some of these hacks are straightforward, like cleaning the white laces in warm water, some of the other tips you’ll find here genuinely surprising.How to (really) clean your white sneakers is no longer a mystery
Use white nail polish:
It’s as simple as that. If you see a little scratch or smudge on your spankin’-new white sneaks, just take out your favorite white nail polish and do a little touch-up. It works wonders!
Never put white sneakers in the washing machine:
This is a big no-no. Even on the gentle cycle, a washing machine is a bit too rough and tumble (we had to) for sneakers. Stick to hand-treating your footwear!
Use a toothbrush to reach hard to get areas:
Cleanse white lace with warm water:You might be tempted to just toss your white laces in the washing machine—tsk tsk! Instead, hand-wash them in warm water with gentle soap and let them air-dry.Use gentle shampoo on oil stains:Let’s say you stepped in an oil slick crossing the street, or perhaps dropped a big greasy French fry on your new sneakers (it happens to the best of us). When you get home, use your gentlest shampoo, warm water, and a toothbrush or rag to gently wipe at the oil smudge. It should come right out!
Source: https://www.whowhatwear.com/how-to-clean-white-sneakers