How to care your leather wallet Overstuffed wallet is the fastest way to ruin it. Avoid letting your wallet become fat by stuffing it full of receipts and business cards that you will never need. It's a good idea to go through your wallet periodically and cleanse it of old receipts, expired coupons, outdated business cards, and any other junk that's accumulated. If your wallet gets wet, you should always blot it dry with a soft towel and then allow it to air dry in a closed position. Don't leave it open to dry or it may lose its shape. Never try to blow dry your wallet or apply heat. Wallets should always be dried promptly. Moisture can cause mold or mildew to grow on the leather. Avoid placing your wallet in direct sunlight, such as on the dash of your car. This can fade the leather.