If your Akubra is slightly soiled with dust and/or grime, firstly brush the hat in an anti-clockwise direction to remove any dust and then lightly rub the affected area with a paint thinner or dry cleaning fluid. Do not use too much. Car upholstery cleaner can be used. Spray on and leave for 15-20 seconds then wipe off with a damp cloth. Any serious marks should be cleaned by a hat cleaning specialist only, please refer to our list of hat refurbishers.