I've got some questions for people who weather fabric. I'm making a denim coat that I want to look old and worn, and I got the idea to try rubbing charcoal on it. I'm wondering two things: 1) would at least some of the dust stay on the fabric pretty well, or would it all rub off eventually and get on other things (I'm probably going to use the coat for non-cosplay purposes from time to time, so I don't want it to be shedding charcoal dust wherever I go), and 2) would having charcoal dust on the fabric make it significantly more flammable? I know the dust is flammable when in the air but I have no idea how that would change when it's on fabric. I realize that if I'm not planning to be around open flames it's probably not a huge issue but I'm just kinda paranoid.