What is Sensa?

Can anyone tell me anything about this product and how it works?  Has anyone tried it with success?  I went on to the website but it really didn't say a whole lot about the product.

usually bulking agents (like this) work poorly for a few weeks and then not at all.
they supposedly fill you up

they do help keep your stools soft, but weight loss is low and transient

sorry, no magic wand here  

Sensa is supposed to affect your sense of smell. The sprinkles are calorie free, gluten free, yada yada... but it still comes down to diet and exercise, according to what I've read about it.

I am sure the sense of smell highly affects how we taste foods, but I'm not sure exactly how Sensa is supposed to curb hunger. It almost sounds like the Sensa enhances savory and sweet flavors. Like I said, I don't quite get how that would help curb appetites, though!