While it’s not ideal, it’s unrealistic to think that your leather jacket will never get wet. If this happens, you needn’t worry; leather can sustain such conditions. If it becomes soaked by heavy rain or snow, let it air dry, then treat it with a leather conditioner. (Generally speaking, using a leather conditioner like mink oil every so often is good practice, as it keeps leather from drying out, looking ashy, or becoming subject to severe damage from the natural elements, experts say. As with moisturizer on human skin, conditioner on leather nourishes and hydrates for a smoother appearance.)