Fill one bucket halfway with warm water. Set the bucket aside.
Pour 1 cup of warm water into the second bucket. Add 1 cup of rubbing alcohol to the water to make a wax, oil and grease-cutting solution.
Soak a sponge in the rubbing alcohol mixture. Squeeze the wet sponge to remove excess solution.
Scrub the seating area of your slippery leather couch. Wash the seat cushions, back rest area and armrests with the diluted rubbing alcohol to remove the slippery wax coating.
Dip a clean cloth in the rinse water bucket. Wring out the cloth. Rinse the leather couch by wiping it off with the damp cloth. Dry the surface with another cloth.
Combine 1 tablespoon each of white vinegar and neat's foot oil in a bowl. Stir the two ingredients together with a spoon.
Moisten a clean cloth with the vinegar and oil solution. Rub the mixture into the leather to clean off any remaining wax residue while moisturizing the surface. Wipe off excess vinegar and oil mixture with a dry cloth. This mixture maintains the leather's suppleness and makes it soft, without making it slippery.