Klasse is a great product and gives excellent results, and it last a good six months, thats the good. The only bad thing about it is having to wait 6 months or so to reaply it. I actually enjoy putting it on agian. I love to detail my cars frequently, it makes me feel as though i am actuly doing somthenig to better the look of the paint and with Klasse ,i have to wait.. Well one thing gained from all of this, is that it works great!