Smoke from cigarettes, cigars or a fireplace creates deposits on leather upholstery. In the case of tobacco, this is a film of tar that sits on the surface; a fireplace deposits soot and creosote. These deposits are stubborn, but can be almost completely removed over time.
This is particularly true in the case of finished, smooth leathers. Suede and nubuck will require more care. Use saddle soap to remove the smoke deposits.
Saddle soap is readily available in grocery and drug stores where shoe polish is sold. It contains not only cleaning agents, but also conditioning agents; once you remove it your leather should be soft and supple. Test the saddle soap first on an inconspicuous part of the upholstery (the back or an edge) to be certain it does not discolor the leather.
Work up a good lather with plenty of water and some bunched gauze or a synthetic sponge. You will need plenty of suds and moisture to loosen smoke deposits. Wipe off the lather and rinse your rag or sponge ... more.
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