How do you use hair curlers on already curly hair for a looser curl?

I already have pretty curly hair but I am looking to get a looser curl. Will hair curlers work on my already curly hair, and if they will, how do I use them? Or is there an easier way?How do you use hair curlers on already curly hair for a looser curl?
You have to use a roller that is larger the your natural curl. Roll your hair with lottabody setting lotion, and sit under a hair dryer.