How do I keep second day type 2C hair defined, voluminous and frizz/poof free?

My hair always looks rather silky and defined after my wash. I style it with water and DevaCurl Mist-we Refresh or whatever and it looks good but by the time I get to work I've lost a lot of definition and volume and my hair is poofy and frizzy. How do I keep the definition and tame the poof?