Features: 1. Powerful Stain Removal: Our Yellow Gel effectively penetrates and removes stubborn yellow stains from white shoes, restoring their original brightness and cleanliness. 2. Safe for All Shoe Materials: Formulated with gentle yet effective whitening enzymes, this gel is safe to use on various shoe materials without causing damage. 3. Easy Application Process: Simply wipe the stained area, apply the gel, and let it work for 6-8 hours. No rinsing required, making it a hassle-free solution for busy lifestyles. 4. Long-Lasting Results: The strong decontamination formula not only removes yellowing but also helps prevent future stains, keeping your shoes looking fresh and new for longer. 5. Versatile Use: Perfect for sneakers, canvas shoes, and other white footwear, our gel is a must-have for anyone looking to maintain their shoe collection in pristine condition. Our shoe stain and yellowing gel contains penetrant, whitening enzyme. It can not hurt the shoes, remove the yellow, make the shoes clean and bright. Its use method is very simple: 1. Wipe the yellow part of the shoe and put tape on the edge of the yellow place. 2. Apply the product to the yellow part of the shoe. 3. Leave for 6-8 hours after applying. 4. Scrub the stain with clean water and wipe it dry. And can be strong decontamination, chemical removal of yellow dirt, fundamentally restore its true color.