Absolute waste of time and money
July 9, 2014
I love Nanoskin, but they missed the mark with this product. I've used it and tested it next to various other products, and it is about as effective at sheeting water as Windex. Their Rain Prep is also pretty bad. Smells like straight ammonia, and it is advised to stay away from black plastic trip pieces, which usually surrounds all car windows. How useful is that?