I have tried most Boat Cleaning products, but i have to say i have been very impressed with the August Race range. As they say it does what it says on the bottle

August Race Crystal Clear is a top quality marine glass cleaning treatment with streak-free technology.

Free from harmful propellants and CFCs Crystal Clear is a safe and environmentally responsible way to maintain and protect glazed surfaces.

Crystal clear has the added benefit of being dye free to ensure no staining to expensive marine upholstery/ finishes.