What to do with fine lines around mouth?

I'm 41 and I have fine lines around my mouth (and I've never smoked). I've tried Restylane injections which has helped but I was curious if there is a product out there that might help. I've been using Retin A as well.

Thanks.

Scar fading creams such as fade fast, mother of pearl and mederma should also help with lines. My derm tells me that the best cure against wrinkles and bad skin is drinking loads of water!