While researching the GTechniq Crystal Serum, I came across this page. It shows that if you are new to applying this kind of chemical, you can mess up your paint job's finish. It may be worth paying a professional who can apply the serum properly, and ensure your finish looks great. Sometimes, it really does pay to hire someone to do something. When the thing you need is what they do for a living, they have incentive to do it right.