I was 37, when i had my son. I put on 42lb in weight. I did not get one stretch mark. The only thing i took was evening primrose oil. Don't think i put anything on topically. I can't believe how lucky i was, especially at that age. I ate a lot of oats, as in porridge. I do have a scar though, from when i had an ovarian cyst removed, but that is not that noticeable, although if it fades more, i would be pleased.