Apply any cooking oil onto the leather surface, and use a soft cloth to complete the upkeep. Avoid cleaning products with alcohol, turpentine or other mineral spirits as they will discolor and dry out leather. Never allow water to soak into your bag. If the bag gets wet, do not use a hair dryer on it. Instead, absorb as much water as possible with a thick microfiber hand towel and allow the bag to air dry. Then, condition it again and store it.