Skinnygirl, which Frankel markets as full of "natural flavors and lightly sweetened with agave," also contains sodium benzoate, which can become carcinogenic when mixed with vitamin C. "After discovering that [Skinnygirl Margarita] contains a preservative that does not meet our quality standards, we have had to stop selling it," said the store in a statement. A Whole Foods source told Huffington Post “The store prides itself in selling the best quality whole products that our high-end consumers expect. Not novelty products that are shaded with secrecy.” A rep for the drink said it has "extremely low levels" of sodium benzoate, which is a "very common" preservative, used in most soft drinks. On its own is not considered a carcinogen, and person would have to consume "a huge amount of it" to hit toxic levels.
Frankel herself remained unfazed, telling Access Hollywood "I'm not making wheatgrass here. If I could put an agave plant and some limes on a shelf I would. [The Skinnygirl Margarita] is as close to nature as possible, while still being a shelf-stable product...We were bound to piss someone off and everyone loves to try to tear down a success. This is a non-event. I haven’t lost even a wink of sleep.”