My white sneakers had turned yellow. Years of wear and accumulated grime from a recent festival had turned them from crisp white to a dingy pale yellow. I considered replacing them, but these were my favorite pair: comfortable and perfectly broken in.Before giving up, I decided to try one last thing. I discovered a surprisingly simple method that most people overlook: a cleaning solution that addresses the specific causes of yellowing without harsh chemicals.Within an hour, my sneakers looked brand new again. The transformation was dramatic enough that I started using this method on every pair of white sneakers I own. Here's exactly what I did.The stain removal method that actually worksThe solution involves mixing baking soda with hydrogen peroxide to create a paste. This combination is powerful enough to lift oxidation and embedded stains without household bleach's harshness.This baking soda and hydrogen peroxide paste is formulated specifically for canvas and mesh. If you are cleaning leather, swap the peroxide for plain water to protect the finish. You'll find full details on treating specific materials further down.

(Image credit: Shutterstock)Apply the paste directly to yellowed areas and let it sit for 10-15 minutes. The longer you wait, the more effective it becomes. Use a soft brush to gently work the paste into the fabric, moving in circular motions.Then simply rinse thoroughly with clean water and repeat if stubborn yellowing remains.Get instant access to breaking news, the hottest reviews, great deals and helpful tips.