Saphir Médaille d'Or Mink Oil is a rehydrating balm for restoring dried out leather. The formula is based exclusively on mink oil to hydrate very dry leather objects. Saphir MDO Mink Oil works like grease, but does not leave a greasy and sticky appearance like traditional greases. Mink Oil is a solvent and water-free non-greasy oil and very penetrating and helps to nourish the leather and to protect it.