I use it when I get out of the shower. It is really helping with the dryness all over my body. I also use a stretch mark cream by the brand Mustella. It makes my skin really soft and smooth. It also smells really good too.
I used it twice daily (in the morning after my shower and at night before bed) with my last pregnancy, and my stomach still ended up looking like I was attacked by a baby tiger =( Sadly, I believe good genes are the only thing that can really prevent stretch marks. But, what the heck, it does smell good and other than being a little oily for a few minutes, there are no drawbacks, so try it (and keep your fingers crossed!).
Re: Bio Oil ?