Some recessions write falsely that this is a polish with Liquid Glass. No, it's a surface sealing and therefore needs at no new paints a pretreatment. The associated Precleaner from the same home I can not recommend. In any case, the paint to be sealed must be free of wax residue. Very good results I have 492,427 polish MPA made in combination with Festool 11000/1. Gradually increase depending on scratches or weathering condition of the vehicle paint with other Festool subtleties to the glossy variant 11000/1. I use Liquid Glass for over 15 years and have not seen any product that produces a similar Lackbrillianz. Compared only the much more expensive "Legend" (about 71) could be called from the same manufacturer that while developed less shine, but keeps longer by a multiple period. Apply the product using the enclosed sponge that should dampen before. Regular washing of the contract sponge is also recommended. After a relatively short dry season can be brought to a high gloss using microfiber cloth of lacquer. 2-3 layers should apply at a distance of min. 12 hours, the hardening of each layer is accelerated by sunlight. The ideal temperature for processing I have found from experience the range 15-20 degrees. The seal is very efficient and cheaper than other products based on the area to be achieved. It is also ideal for rims and chrome parts.