After purchase, spray a waterproofing agent (always colorless) on the bag, at least 30 cm away, so as not to create a halo. Once is enough, but even waterproofed, you avoid making it (too much) take the rain. Like the sun, it fades, we do not leave it on the rear shelf of the car... We do not hang it on the radiator or near it either. We also take care that our raw jeans, with the unfixed dye, do not bleed onto the bag, especially if it is light (because, in the event of color transfer, there is unfortunately not much to do).
We remove the small dirt with a clean damp cloth and a little Marseille soap, before leaving to dry in the open air. It can be rubbed with a clean cloth or cotton soaked in cleansing milk. On suede calfskin or nubuck, we pass a white eraser or a suede brush. On patent leather, a damp sponge. In the event of a grease stain, sprinkle immediately with Sommières clay. Big cata (like cat pee):we go to a leather specialist...
We nourish the natural leathers with a balm (Renapur, 100% natural which, in addition, revives the colors). To prevent the varnishes from cracking, massage the leather with glycerine or petroleum jelly. Finally, to protect it from light, humidity and dust (which can be abrasive), it is put in a cover, when it is not used for a long time. B. J. Thanks to the Nat &Nin brand.