"Brooks cleaner foam has been developed to clean and restore all Brooks bags’ surfaces to their original lustre and shine. To use: Apply a good quantity to a soft cloth and carefully yet thoroughly rub the entire bag. Leave to dry. It cleans delicately. Proofide may be applied to all leather details, allowing it to permeate before polishing off with a soft cloth to avoid getting any on your clothes. *Note: Proofide will darken the leather somewhat which should be considered when using this product."

How do I maintain my leather bag?

As well as for the saddles, leather on bags and backpacks should be kept supple. The best advice would be to use products specifically for the cleaning of leather bags. Using Proofide to clean your bag can work as long as result in a very noticeable darkening of the leather.