Fantastic product for removing mineral deposits (water spots) which is a common problem here in Perth WA if your tap water is not filtered, or if you park near a sprinkler, or if you are not very methodical with your washing technique. Also, little bit goes a long way as demonstrated by The Forensic Detailing channel on YouTube.
Not only does it do exactly what I was after, it also performs damn well as a quick detailing spray and I am quite impressed with the shine - although given the ingredients in this product I wouldn’t use it as a detailer unless there was a problem with stains or water spots.