Please make sure your shoes are clean before applying Nanoshi particle spray. Hold the bottle upright at a distance of 15 to 20 cm. Try to spray and apply evenly. Wait 24 hours for the coating to set. Then repeat the steps to apply a second coating for the best results. Wait another 24 hours before exposing your shoes to liquid. Find more information about the application here.NOTE: Wait 24 hours and allow the coating to fully set to achieve the best results.