Tummy Honey Butter

So this is the newest thing in my life. One of my friends swears by this product. She says if it had not been for this stuff she knows she would have gotten stretch marks on her stomach. It's been 9 months since her son was born and she is back in a bikini and does not have one stretch mark. I have also read about other people online who had the same experience. It's pretty greasy so I bought some tank tops to wear under my clothes so I don't ruin them. But we will see how it works. Anyone else tried it? It's a bit pricey but can you really put a price on not getting stretch marks?