What hair product should I use to get a military style bun?

Okay so for high school I am taking a military class and the first day of every week we have to be in full uniform. So that means I have to have a bun. I have lots of layers. Like a lot! So what sort of product should I use so the layers aren't sticking up everywhere? Should I use gel or a wax or what? Links would be helpful!What hair product should I use to get a military style bun?Hair wax or smoothing serum and if using pins get ones that match your hair colour. To help with the layers part hair on the side and secure instead of trying tie a pony tail straight up.What hair product should I use to get a military style bun?You could use lots of bobby pins and hairspray. That's what I do when I put my hair up.