Woman sues EOS lip balm claiming it made her lips bleed and crack

NEW YORK -- The maker of a lip balm popular with several A-list stars, is now facing a possible class action lawsuit. One woman said she had a bad reaction after using EOS, and she says she's not alone.

It's the egg shaped lip balm touted and pouted by celebrities from Miley Cyrus to Kim Kardashian and Britney Spears, proclaiming their love for the product EOS - "Evolution of Smooth".

But on Thursday morning came a proposed class action lawsuit by a woman alleging the product "has caused consumers lips to crack, bleed, itch, burn, flake and generate severe boiling and blistering."

The lawsuit, brought by Rachel Cronin, claims after using the product for the first time she had a negative reaction.

Cronin says, "Within 48 hours my lips became extremely dry and irritated they were flaking all around the outside."

According to the lawsuit, she contacted EOS who she says told her to seek medical attention.

Cronin explains, "I couldn't fully open my mouth to eat because sometimes it would crack I couldn't smile fully because it would crack and bleed."

In the suit, she claims after posting pictures of her lips on Facebook there were a "frenzy of responses" from individuals with similar experiences.

Trial Lawyer Mark Geragos says, "The next step will be to collate all the people who have similar complaints, similarly situated, we're assembling that as we speak."

EOS Tells ABC News: "We firmly believe this lawsuit is without merit. Our products are made with the highest quality ingredients and meet or exceed all safety and quality standards...validated by rigorous testing...The health and well-being of our customers is our top priority."