Our leather seats are coated as are most modern leather seats today. This means that the leather conditioner you are applying is going to be gone within about 3 days because it just sits on top of the surface. You need a leather sealer and protectant like Leathermaster protection cream. It's really good stuff.
2009 E90 328i Monaco Blue
premium/idrive/convience/logic-7/cold weather/ xenons/ saddle brown interior