When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Because it's satin it makes it hard to wash even as your washing the car. The oils of your skin if they touch the car it will leave a mark and you would have to wash over again with the washcloth (not just wipe over it with a dry towel) I'm a guy who likes to wax his car so the fact that I can't use any carnueba wax means that I have to wash it more often. Then add the fact that it's black and that collects dust easy and you got yourself a paint job that's hard to maintain haha