[Misc] What is the scammiest product (in your opinion) that you have bought?

Beauty Tips For Body Care
So for me I think it's between two: (1) A 'night cream' from an indie SoCal 'all natural' brand called Alitura Naturals that costed me like $80 for a 50 mL JAR PACKAGING and had 0 effective preservatives (cuz, ya know....nature knows better than parabens), so it literally fermented and smelled like fish after a couple of weeks using it, and (2) a 15% glycerin serum from Kiehl's in which I only got 50mL of product for $60 and it had literally nothing amazing about it other than the 15% glycerin, which the company could still profit off of making at a fraction of that retail price since glycerin is so cheap.What are your "I can't believe I bought that product" stories?
Girls Blog 2015
Submitted by rhizodyne