Would makeup brushes get messed up in a makeup bag?

lets say i have a makeup bag that i put my makeup brushes (face and eye brushes) and some of my makeup (like blushes, concealer, foundation/tinted moisturizer, mascara, etc.), which i put in my bag and carry around. will my makeup brushes roll around, get crushes by my makeup, and mess up the bristles? and if it does, how can i fix this?