Wine stain on leather Most automotive leathers are so heavily coated these days that it probably didn't soak in. First step is always blot up any liquid (not in this case). Next step is a damp cloth and rub the area, if that doesnt work try with some mild soap and a damp cloth (Dawn dish washing liquid is my go to). If you want to try something stronger after that then do like you said in an inconspicuous spot first.