We recommend treating your bag with our waterproofing spray only on specific leathers and at a gap of 3-6 months if needed. Apply evenly at a distance of 30 cm. This treatment will protect against moisture so you can enjoy your leather bag/accessory for a very long time! However, please note distinct leathers can react differently to this product so check out our care guide to see if we recommend it for the specific leather of your bag. It is always recommended to do a small patch test in an inconspicuous part of the bag/accessory.