This will depend on the shoes that you own. If you own leather or swede shoes it is important to buy a protective spray to put on them. The spray can be bought at your local shoe store or in some major markets. Spray your shoes with the spray to seal them and protect them from water and heat. You should do this every 3 to 6 months depending on how wet or hot it is where you live. Using shoe polish on your shoes will also protect your shoes from water and heat. You can easily find a good shoe polish in all major stores. They have the roll on liquid polish or the can of cream polish. Make sure you buy the right color for your shoes. Rub the polish on your shoes and let it dry completely. Afterward, use a rag to buff them up.