LEATHER CONDITIONER 12OZ Leather Conditioner will preserve your smooth leather. You've cleaned it, rubbed out coffee stains, food spills and the dirt on the side bolsters and you don't want to leave that freshly cleansed skin open to new indiscretion. Seal it with Mothers Leather Conditioner. Our Leather Conditioner is formulated with lanolin and neatsfoot oil to preserve the natural oils lost with age. It leaves a protective barrier that helps seal out the detrimental effects of the sun, time and daily abuse.