I use the Leather Conditioner on everything in the Vette. It has a real high SPF factor for protecting it from the sun. Plus you don't spray it so it doesn't get on the glass, and I also make sure I cover it when I'm cleaning the glass. If you use it and notice it is blotchy or streaking, that simply means that it is absorbing the product faster in some places (some places are dryer than others). Reapply another time or even two until the streaking or blotches are gone. When there's no more streaks, you know you're well protected.