Just need to grow a pair and put it on the windscreen now...........after reading this below on a website....... No one has ever described
ME as competent so I'm stuffed
http://www.shinearama.co.uk/product.php?id=GTE-G4-100 G4 Glass Nano Polish
Please note that this product is for professional application only.
Be sure that you are competent or have sought sound advice from a trained professional before purchasing this product.G4 utlises consistent nano sized abrasives and a citric acid cleaning agent to provide fast and agressive glass and ceramic cleaning to remove contaminants that glass cleaners fail to remove.
What's special about Gtechniq G4 Glass Nano Polish? G4 does exactly what it says on the tin. It remove all contaminants from glass or ceramic surfaces which are not removed during normal cleaning process without any damage to the substrate. G4 is easy to use and is exceptionally fast. We recommend using G4 prior to G1 or G3 application on any glass other than on new cars.
How do I use this product?
Shake the bottle well
Apply directly onto a buffing cloth (we recommend a cotton towel type cloth)
Work the product in a circular motion
If the product dries on the surface, dampen with water to reactivate
Remove excess product with a damp cloth