It is available in most supermarkets in the section of floor cleaning products.
It looks a little cloudy in the bottle (I believe Future is transparent), but dries beautifully clear.
Whenever I dip a canopy or window, I place it on a piece of clean printer paper (paper towel has too much "lint"), then put a small drinking glass inverted over the piece to stop any dust landing or blowing onto it. I prop the glass up with a couple of toothpicks to allow some circulation.
