We advise you to use regularly a colourless milk special leather quality, not greasy, without silicone or solvent, to be applied with a soft cloth outside. Do a test on a hidden place and wait 48 hours.
In case of stain and if the colourless milk does not have the desired effect, you can use a special leather stain remover to thoroughly clean the stain.
To remove grease stains, you can apply “Terre de Sommières” by gently tapping the stain and then applying the colourless milk.
Avoid prolonged exposure to intense light and keep your bag from the rain.