I bought the cleaner to clean my convertible top. However, this is partially offset with plastic. When I used the cleanser, milky spots were created on the plastic in retrospect that slowly disappeared only after repeated car wash again. In the instructions on the package is of such a reaction to plastic to find anything. After repeated complaints to Nigrin I got up today no response. The effect of the cleaner itself I found not really good - detergent diluted with water has the same effect. Due to the bad product and customer service I rate a purchase from!