I am not a detailing professional but I do like keeping my cars looking new. I have bought 2 brand new cars since 2009 and I have kept them looking new by buying all kinds of car caring products. I visit a lot of different car forums and collect the best car care products including cleaners, wax, tire shine etc. If you need advice on recommended tire shine, cleaners, car wash, write a comment. I have heard about liquid glass before but I wasn't convinced that it was as good as people say it is. I was tired of applying wax all the time and the results were great but it didn't last long. I bought my second car several months ago and I wanted to keep it looking new all the time without applying wax every week. I almost purchased OptiCoat 2.0 because many people say it is a permanent coat on top of your clear coat and it lasts well over 3 years. I decided not to buy it because I don't think my car will keep looking new for three years after applying a product one time. So I did some research on other products and I came across liquid glass again. This is a very old product that has been around for over 20 years but the formula has slightly changed over time. The ownership of the company has also changed but the product is better than ever.It's very simple to apply and keeps the car looking shiny and it is somewhat permanent. Since my car was new, I didn't use a clay bar to get all the materials off the paint. I simply used the liquid glass pre cleaner and then applied liquid glass polish. You have to make sure the paint is clean and defect free. If you have rock chips, I would recommend applying touch up paint first because the liquid glass will permanently seal those chips and will be hard to fill later. I applied one layer of liquid glass using a microfiber cloth one section at a time and let it dry for 15 minutes and then cleaned off the haze using another cloth. Make sure the temperature is at least 50 degrees and there is sunshine. After doing the entire car, let the car bake in the sun for about 4 hours and apply another coat and let that bake. After my second coat, my car looked better than new and I am not kidding. It is a white car and it had a deep shine to it. I can tell that there is a layer of protection on my car. It has been two months since I applied the two coats and to this day water just bounces off my car and dirt barely sticks to the paint. I also applied liquid glass to my mirrors and windows. It's funny to see the water sliding off my glass when it rains. It is very easy to wash my car now because the dirt does not stick to the car as strongly as it used to. Liquid glass can be applied many times as desired without removing the old coat; it is actually recommended that you apply multiple coats. The more coats you apply the deeper the shine gets. I have read in many places that after about 20 coats, the paint will have a lot more rock chip protection. The layer will get thick and will protect your original paint from chips. Obviously you can't expect total protection because rocks can fly at your car pretty fast.  I am waiting for better weather to apply more coats. I actually bought a gallon of liquid glass from autobarn.com for around $60. You should not apply any wax on top of liquid glass if you plan to apply more coats because you will have to remove that wax before applying another coat.