The surface needs to be cleaned to expose the coating, so this result usually occurs after the surface has come into contact with extreme dirt or dust (common in India’s environment). If a strong detergent is used or shoes sent for dry cleaning; the effect of the coating will be reduced. Using hand soap/detergents over the material is not recommended.
If your shoes come into contact with soiling agents like dirt or mud, then simply rinse with clean water, leave to dry and re-apply Vetro Power Footwear Protector to advance it’s protection.
Always remember - Vetro Power Footwear Protector is a Water & Stain Repellent; designed to prevent accidental stains, spills and watermarks.