How many brushes do you have?

Hi Reddit,

I have fine but dense wavy hair and I just started using leave-in conditioner (It's a 10 Lite) and hair oil (Verb Ghost oil), applying them seperately on damp hair after showering. I read some people recommend brushing your hair to distribute the products. However, I wonder if it won't build up product in the brush that way and make my hair greasy if I brush it the next morning on dry hair. Would I need a separate brush to prevent that? Or do you guys just clean it often/not notice any product buildup?

Thank you for your time!