LaCroix, the mega-trendy, Instagram-worthy beverage brand is not looking so sparkling these days. As a matter of fact, a lawsuit has been filed against the sparkling water's parent company, claiming its ingredients aren't as natural as they advertise. 

The internet is losing it, obviously, but there may not be any reason to worry.

Whether you're a LaCroix fanatic or think it tastes like hairspray, you probably know all about this colorful brand. It's the leader in the carbonated beverage boom.

Between 2012 and 2018, LaCroix sales in the U.S. increased by a casual 667%.

Besides the Instagram-worthy, colorful pastel cans, people were drawn to the beverage because of its zero-calorie, all-natural appeal.

But as it turns out, the whole "all natural" part may not be true. At least, that's what customer Lenora Rice claims.

photo: Fox

She felt so strongly about it that she filed a class action lawsuit against the manufacturer of LaCroix last week in Chicago.

The lawsuit alleges that at least three chemicals—limonene, linalool propionate, and linalool—that weren’t clearly labeled on the can were found after third-party testing.

Not only is the law firm Beaumont Costales that brought the suit saying that LaCroix is misleading consumers by using the words "natural flavors" to hide "synthetic" ingredients, but they're also claiming that one of the chemicals — linalool — is an insecticide used in cockroach poison.

"LaCroix in fact contains ingredients that have been identified by the Food and Drug Administration as synthetic. These chemicals include limonene, which can cause kidney toxicity and tumors; linalool propionate, which is used to treat cancer; and linalool, which is used in cockroach insecticide," the lawsuit obtained by CBS states.

LaCroix, of course, denies these allegations. And the National Beverage Corp., the brand’s parent company, released a statement explaining what "natural flavors" really means.

Long story short, natural flavors = essence oils from fruits.

But what about those poisonous chemicals? Are you really going to roll over and die after drinking these sparkling beverages?

In a word, no. The lawsuit is basically preying on society's fear of chemicals. Linalool, the chemical raising eyebrows for killing cockroaches, is actually produced by many flowers and spice plants, like mint, herbs, and citrus fruits. It's commonly used in many food and drink products.

Sure, these chemicals sometimes appear in non-food items as well. But that doesn't mean they're dangerous.

That's like saying chocolate is dangerous because dogs can't eat it.

But, alas, I'm not a scientist. Listen to Roger Clemens, an expert in food and regulatory science at the University of Southern California, instead: "It is very unlikely these naturally-occurring substances pose a health risk when consumed at levels usually found in foods. If there were a health risk, then citrus juices and spices, such as curry, would not be consumed or be part of the commodity market."

TL;DR: LaCroix is not going to kill you. You can keep drinking it.