Dear Ms Melville,
Thank you for your email regarding NIVEA Body My Silhouette.
In response to your enquiry, our products are tested using a combination of physical measurement, expert grading and consumer in-use testing to support all claims made. The studies themselves are strictly confidential as this information is useful to our competitors.
I am sorry I cannot be of further help in this instance.
The Consumer Relations Team
So... I'm expected to take their word for it? I'm not saying this product doesn't work but I find it completely unacceptable that their methods aren't available. I have no idea how these studies are regulated (if they are). For now, I'll stick to my own method: Not Eating.