I use bio oil. It quite good. I got my first strech mark a couple of weeks ago at about 26 weeks. It's on my lower belly, conquencidently i had lapsed the oil use for a few days prior. So i got back into and it actually seemed to fade almost completely for a bit. I can see it again now faintly. I have heaps of strech marks on my boobs from puberty and these go up and down all the time. Some days they are purple some days they are almost invisable.

I am sure that it probably doesn't do much but it feels really good anyway. The best thing about the oil is i use it after my nightly shower and it soaks in pretty fast. With creams i usally feel clamy and hot if i try go to bed shortly after rubbbing it in.