Is Cocunut Oil Good for Stretch Marks?

Hello Everyone.

I heard cocunut oil is good for stretch marks. Is this true? If so how would it be applied? Should i buy a lotion or cream with coconut in it? Or should i buy pure coconut oil and rub it on?
I have these horrible stretch marks over my shoulders from loosing and gaining weight rapidly...i really need some help ...they look awful.

Thanks
Martha