Chelsea Leather Food nourishes and protects your leather products. Removes excess dirt and allows the leather to maintain its natural properties and does not prevent the leather from being polished. In fact, continued use will assist in preserving the natural properties of the leather even in extreme climates. Won’t damage the stitching. It contains only natural oils and waxes that need to be left on to penetrate into the leather, preferably overnight. They’ve been making this stuff since 1890, so it must be good.