Salon Professionals Claim Occupational Exposure to Hair Dye Products Caused Bladder Cancer: Lawsuits

Two California hair stylists filed separate lawsuits, indicating years of exposure to carcinogenic chemicals in dark hair dyes caused bladder cancer.

Two product liability lawsuits were filed this week by separate California salon workers, who each spent decades as professional hairdressers, and now indicate that repeated occupational exposure to toxic chemicals in hair coloring dyes caused them to develop bladder cancer.

The complaints were brought in the Superior Court of the State of California for the County of Los Angeles on March 25, with each plaintiff raising nearly identical allegations that L’Oréal, Wella, John Paul Mitchell Systems and other leading beauty industry companies knew their permanent hair dye products contained carcinogenic ingredients, yet withheld this information from salon professionals.

Each of the companies named as defendants in the lawsuits manufacture and sell permanent hair dye products, which have been a mainstay in professional salons for years. Although the dyes have been widely marketed to cosmetologists as safe, the lawsuits point to a number of studies published since the early 2000s, which suggest that frequent exposure to hair dyes more than doubles a stylist’s risk of developing bladder cancer.

With increasing evidence linking certain chemicals in hair dye to bladder cancer and other malignancies, these lawsuits represent the beginning of what is expected to be a larger wave of complaints likely to be filed in California and across the country in the coming months, as more hair stylists uncover the potential health risks tied to long-term salon exposure. Notably, over the past 45 days, at least four hair dye bladder cancer lawsuits have been filed in California alone, each raising similar allegations.

Hair Dye Coloring Bladder Cancer Lawsuit

In one of the complaints (PDF) filed this week, Kern County resident Shadia Smith, who has been a licensed cosmetologist since 1981, claims that she routinely handled professional hair dye products nearly every day for over 40 years—mixing, applying, and cleaning these chemicals as part of her regular salon work.

She contends that none of the product labels or packaging for any shade of blond, brown or black hair dyes provided adequate warnings about the potential carcinogenic risks, leaving her unaware that her frequent occupational exposure to these substances placed her at an increased risk for bladder cancer.

“Beginning in approximately 1981, Plaintiff, while a citizen in the state of California, was exposed to products purchased by or through the salons where she was employed, Williams Golden Lady, The Hair Loft, Hairitage Salon, The Hair Co., Greggos, and The Hairapist,” Smith states in her lawsuit. “Plaintiff was further exposed by mixing, applying, cleaning, inhaling, and removing hair color products and any residue from bowls, brushes, towels, sinks, and table tops, on a daily basis throughout her time spent in hair salons and while employed in hair salons from approximately 1981 through the current date in the state of California.”

Smith indicates that she was diagnosed with bladder cancer in March 2022, forcing her to undergo painful and invasive medical treatments. Her complaint indicates she continues to undergo regular monitoring due to her increased risk of recurrence, and she is now seeking compensation for the physical, emotional and financial harms she has suffered as a direct result of the manufacturers’ alleged failure to disclose known health hazards.

Hairdresser Occupational Exposure to Hair Dye Chemicals

In the other complaint (PDF), brought by a San Mateo County, California resident, Martha Wilson-Whitney indicates that she worked as a licensed cosmetologist from 1962 until 1981. Over those 18 years, Wilson-Whitney claims she repeatedly handled and inhaled various hair coloring products sold by L’Oréal, Wella and John Paul Mitchell Systems, among others.

The lawsuit states that, like many stylists, she followed the manufacturers’ instructions for proper mixing and application, trusting that the products were safe to use without the need for special protective measures.

Wilson-Whitney states she was diagnosed with bladder cancer from her exposure to hair dye chemicals in January 2015, enduring extensive chemotherapy and surgical procedures. In the lawsuit, she alleges that the defendants provided no warnings or instructions to protect salon workers from the cancer-causing chemicals in their products, resulting in years of unnecessary exposure and severe, life-altering health consequences.

“Defendants intentionally concealed and suppressed the true facts concerning the products with the intent to defraud the Plaintiff, other consumers, and the public in general, in that said Defendants knew that Plaintiff would not have used the products if [she] had known the true facts concerning the risks and dangers of the products”, Wilson-Whitney says in the lawsuit.

Both hair coloring dye lawsuits present claims of failure to warn, design defect, negligent failure to warn, fraud and violations of California’s Unfair Competition Law. Each plaintiff seeks compensatory and punitive damages, asserting that had the manufacturers adequately disclosed the known risks, they could have taken steps to protect themselves from excessive workplace exposure to carcinogenic substances in hair dye products.

2025 Hair Dye Bladder Cancer Lawsuits

As additional research continues to emerge supporting the link between hair dye products exposure and cancer risks, licensed cosmetologists and hair stylists are now learning about the serious occupational health risks they have faced for years, and individuals diagnosed with bladder cancer are now pursuing lawsuits against hair dye manufacturers, for failing to adequately inform and protect users from these hazardous substances.

Potential hair dye bladder cancer lawsuits are being investigated for cosmetologists, hair stylists, hair dressers, hair colorists or other licensed salon professionals that were routinely exposed to chemicals in permanent hair dye, and later diagnosed with bladder cancer.

Hair dye cancer lawyers are providing free consultations and claim evaluations to help individuals throughout the United States determine whether financial compensation or settlement benefits through a hair dye cancer lawsuit may be available.