A quick question though, have you tried using talcum powder instead of flour? will it give the same effect?

I am in agreement with the cautions about breathing the flour dust.

Once it’s introduced into the air, it creates a very fine particulate that can easily be breathed into the lungs. That has to be unhealthy, especially for dancers. And even though it is being kept a short distance from the dancers, the finest of the particulate matter is still wafting through the air when they can breath it. Ditto the photographer and his assistants. Anyone on the room, for that matter, including the clean up crew.

And while it’s true that people who make pizzas and other baked goods work with flour, they are not purposefully tossing handfuls of it in the air for hours on end to the point where it is visibly restricting the light, as would happen to get these great effects in these photos. Even so, people who work around flour dust on a regular basis wear dust masks.

And another thing — flour dust suspended in air is not just highly flammable, it’s highly explosive, which is why smoking is never allowed around grain elevators.

Sorry to throw such a damp rag on what you’re doing, but you’re playing with people’s well being.

As Alessio – said – use caution though.
Not just inhalation – but flour particles in a fine mist can be

HIGHLY FLAMMABLE

Search YouTube for “Flour Fire”

then again, pizza boys would be dying left and right if that were the case