Gloves can be washed...very carefully on the delicate setting in the washer, then long drying at delicate or warm in the dryer, or on a separate glove dryer. Laundering out the old sweat and ski oil may help. Be ready for the gloves' linings to get inside out, and you have to poke each finger back into place. If they're worn, the lining stitching may come apart. Re-treat any leather parts after the washing. Re-waterproof the fabric parts. The washing can free up the insulation, but not as good as new.
If the gloves get stinky from old sweat or get hard to pull on & off when your hands get moist, try deodorant foot powder in the gloves. It works pretty well for stink and well for pull-on.
If the gloves get stinky from old sweat or get hard to pull on & off when your hands get moist, try deodorant foot powder in the gloves. It works pretty well for stink and well for pull-on.