I have this plastic cleaner tried to finally get my plastic window frames again white and I'm thrilled. While it's not quite as simple as indicated, so spray with, let act and wipe, it was not done so completely. But I needed not so a force, as with other other products. My frames are now much brighter and have only slight shadow on, but I think next time, the then completely off. What has been built up over many years probably, yes can not be removed at a time ... but I'm already very pleased with what brings a strength and power of these cleaners :)
