Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Definitely made the weatherstripping darker

I had to use a lot of this on my severely damaged weatherstripping (car is 4 years old, but looks like it was left in the sun for extended amounts of time in South Texas). I was pleased with how easily the product applied (pretty smooth, not chunky), and it definitely darkened up the weatherstripping. It was not able to return the weatherstripping to original, factory condition after several applications, but it definitely saved hundreds of dollars vs. replacing all the weatherstripping.Make sure to wipe up any over smear as soon as you can, it comes off easy from the paint or glass but you can't let it dry on them or you will be kicking yourself.