We used to put on really wet leather boots - they stretched to original stretchers that could be adjusted in length and across. The drying skin could not shrink. Some people let their wet shoes dry right on their feet. They stretched out to someone. Someone caught a cold. Other sources state that instead of water, it is better to use alcohol for the more delicate shoe material. However, it is advisable to first test the reaction of the shoe to fluids. Some colored skin could release the color and remain spotty.