For any one who's been using this product, knows it makes everything look all crisp and clean after a good wash. Now from what I've learned from years of use, being it's oil based, it hangs on to dirt and grime pretty well. This is a pic of what it currently looks like. Mind you, I use soap and pressure washer when I wash. The bottom pic will b what dome elbow grease and a towel soaked in Invisible Glass will do for removal. The dark spot is what 5 minutes rubbing did.