I use Rose Hip Seed Oil too! I got it from Mountain Rose Herbs. A little goes a long way, I use it as my general facial moisturizer.
I can't personally attest (yet) to its anti-wrinkle benefits as I've been lucky enough thus far to not have any. But I really like the oil in general, my face actually feels less oily when I use it vs. using lotion. I also like that it's only ONE ingredient.
FWIW, early thirties is a very common time to start getting those little eye wrinkles. This is exactly why I started using the RHSO, I'm hoping to prevent them, but I've read lots of reviews saying it helped get rid of them too.