90% of the food I eat is organic.. I've been eating organic for 2+ years now. I can't say this has had a direct effect on my lips but they did improve a few months after my diet change. When I started eating organic I was also doing all kinds of stuff like taking a beast of a multi-vitamin, doing colon cleanses, exercising, quit smoking ect.. so I can't link the progress to any one of these things directly. The only thing I eat that isn't organic is meat.
No doubt organic food is better for your health but its pretty expensive. Not many people want to fork up the cash for what they consider to be the same food. In countries like Egypt and certain places in Europe all food is basically organic though it isn't labeled that way.
I think the main things are to stay away from processed food, seafood, pork and excess carbs.