Wife's car has the front seats that blow air through them. She plays a lot of tennis and gets sunscreen on the seat this time of year (I try to get her to sit on a towel, let's not go there) What is the best way to clean and with which product?
Personally, I would try a degreaser first. However, with perforated leather, I recommend applying the degreaser to a microfiber pad or cloth, then applying it to the leather via the pad.