Leather is a natural material, which is subject to surface irregularities and slight colour differences. A genuine leather product may also lose colour when wet. Leather may stretch if the bag is overweight or overpacked.
Treat a new bag with a moisture-protecting spray. This will protect the bag from moisture or dirt. Treat the bag regularly with a moisturising conditioner.
Handle the leather bag with clean hands to avoid grease spots. However, if stains do occur, remove them as soon as possible with a cotton cloth. Avoid excessive water, but use a soap suitable for leather, such as Marseille ecological soap.
If your bag gets wet, let it dry out of direct sunlight. Once dry, you can treat your bag with a moisturising conditioner. Never scrub a wet bag, as rubbing can damage the surface of the leather.
Fill an unused leather bag with bubble wrap or other soft padding to keep its shape and avoid leaving folds in the leather. Store the bag in a bag or inside a cotton pillowcase, for example.