I have used three of these ceramic coatings including some really expensive ones. This is by far the best at least in terms of value and also equal to significantly more expensive compounds in terms of endurance and hydrophobic/protective qualities.We have used them on both paint and windshields, and just recently I did a set of alloy wheels with good results. On windshields they act as a kind of semi-permanent Rain X, improving wiper function and visibility. In lighter rain all we don't even have to use our wipers anymore. Car still repels bugs, bird droppings, etc., and paint generally looks like new.Pros:1) Exceptionally easy application including provision of a very nice small sponge pad which allows an even application of a very even thin coating. You need to be fairly economical with this to do an entire car and its windshield.2) Sets up quickly in a matter of 4 or 5 min. depending on temperature and humidity. Don't let it sit too long! After several hours you will not be able to take it off except with polishing compound.3) Easy to take off with almost any towel but microfiber works best.4) Multiple uses. Can code countertops, wheels, carpeting, windshields, etc. etc.5) Fairly easy to take off if you let it sit for too long or miss a spot when you're toweling off the car – surface will develop a funny kind of strange haze that's visible in certain light and from certain angles. The service will not feel as smooth on those areas. A light application of polishing compound – don't use rubbing compound! – removes this fairly easily.Cons:1) does not include a renewer or ‘over coating’ – but for 17 bucks what do you expect?2) No other real issues or problems.