What is this!? , Vaping is horrible for your health, and you should quit it today, While we cant be entirely sure if this is actually vape residue, it is illustrative of what is happening in your Understanding Vape Residue on Car Windows Does Vaping Leave a Residue? Key Facts About Vaping Vapour It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center How To Get Rid of Vape Residue on Car Windows Mix Labs Mix Labs Retail The vapor from vaping devices leaves an oily residue on surfaces, making it hard to see out the window. This can be especially dangerous during the colder winter months, when the temperature