Sprayed Tamiya Flat Aluminium on the bottom. Also sprayed some on the fuselage sides and inner wings where I want to show wear. I'm going to try the hairspray method for the first time and have a quick question before I start. I know the hairspray should be odorless but I read some where that there should also be a chemical missing from the ingredients but I can't remember what it was or where I read it. Is anyone aware of this or should I just go with the odorless?