At this stage..we know of nothing that will just wipe out stretch marks completley.

But, you'll be happy to know the marks will fade..and like scars...scars eventually fade out until you can hardly notice it.
When they're purpley-red ya freak out but give it time, they will fade into the skin.

In the meantime, you can keep them well moisturised with skin lotion.

And to prevent more coming, keep the vulnerable areas moisturised and live a healthy lifestyle to prevent dramatic weight gain or weight loss as this will cause the skin to stretch.

Here is a quote that made me laugh:

"I had a boyfriend who used to say I have stretch marks because I'm a tiger"-Salma Hayek (Actress/Spokesperson for Avon)