Any Creams You Can Personally Recommend To Help Get Rid Of Stretch Marks?

I am a 12 year old girl, so I can't afford surgery or any expensive treatments. I have already tried Palmer's Cocoa er, but that doesn't seem to be making any difference. I was wondering if any of you have tried any cheap creams or home remedies that actually work. Not from an ad you've seen on the TV or something, but with your own personal experience, so I know it works because I don't want to waste my money on something that doesn't work. Thanks! x