Cleaning Dust Off Angel Doll's Feather Wings

Why don't you try to spray that is used to clean off computer keyboards and electronics? It gives a concentrated blast of air and I doubt it would hurt the doll, test first!

It is really hard to say without seeing in person how delicate/fragile we are talking about but I have a few things I dust that I use what I think is a facial brush. Small and has very very soft bristles. Or possibly a clean make-up brush or if you could find a soft paintbrush of some kind. And of course use a very soft touch when doing so.

The only other thing I can think of would be a hair blow-dryer on very low heat and very low force/power possibly. Again it is hard to say without seeing in person how delicate we are talking about so err on the side of caution.

Just thought of another:
sounds odd, one of those squeeze bulbs that they sell to clean ears (ear syringe). LOL. A clean one! used with nothing in it. or a squeeze bottle to squeeze out air softly to dust with. You could accomplish the same by blowing on it but most people spit when they do that.

Here is a pic of what they look like, seems like i have seen them at the dollar stores either in the reg section or the baby section:
http://www.amazon.com/Faultless-Infant-Ear-Syringe-Oz/dp/B001ELAUL8