Home Hair Dye Health Risks & Safety Concerns Hair Dye Lawsuits: Cancer Risks & Legal Action

Hair Dye Lawsuits: Cancer Risks & Legal Action

Hair dye lawsuits claim that manufacturers of popular hair dyes didn’t warn users about the potential cancer risk tied to repeated exposure to their products. Some hairstylists say they developed cancer after years of exposure to hair dye chemicals.

Last Modified: April 10, 2025
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Why Are People Filing Lawsuits Against Hair Dye Manufacturers?

Hairstylists and cosmetologists who were diagnosed with cancer are filing lawsuits against hair dye manufacturers. They claim that these companies didn’t alert people to the cancer risks that might be associated with repeated exposure to their products.

Lawsuits allege that popular manufacturers like L’Oréal not only failed to warn stylists and colorists of the risks, but they knew that long-term exposure carried an increased likelihood of developing cancer.

“Defendants designed and made their hair dyes using ingredients which they knew were carcinogenic,” states a lawsuit filed in California on behalf of cosmetologist Debra Matarazzo.

How Hair Dye Has Been Linked to Cancer & Other Health Problems

According to the American Cancer Society, studies have connected hair dyes to bladder cancer, breast cancer and leukemia. The risk of bladder cancer has been particularly noted among professionals who spend significant time working with hair dyes.

A 2009 study in the International Journal of Epidemiology determined that hairdressers are more likely to develop cancer than the general population.

Which Hair Dye Ingredients Are Involved in Lawsuits

A key point of contention in the litigation is the use of ingredients called aromatic amines. These chemicals react with other parts of the hair dye to create colors. According to the American Cancer Society, darker hair dyes include more aromatic amines than lighter ones.

Evidence that aromatic amines could be carcinogenic has existed for over a century. In the late 1800s, a German clinician discovered that workers in the dyestuff industry were developing bladder cancer at higher-than-normal rates. Similar findings were also recorded in Great Britain.

Aromatic amines remained a common ingredient in hair dye until the 1970s, when more research further emphasized their cancer risk. Some countries banned certain types of aromatic amines, and hair dye manufacturers began to alter their products.

Current lawsuits claim that these potentially dangerous ingredients continue to be used in some commercially available hair dyes.

Have Hair Dye Manufacturers Misled the Public?

Lawsuits allege that popular hair dye manufacturers misled hairstylists, cosmetologists and everyday customers.

“Defendants failed to warn … that frequent, daily, continuous, and/or long-term exposure to their hair dye products, especially by professional hairstylists, could cause or greatly increase the risk of bladder cancer,” Matarazzo’s lawsuit claims.

One of the key claims made in lawsuits is that these companies should have alerted their customers to the potential cancer risk that could be associated with their products. Hair dyes generally don’t contain warnings along these lines.

Some products also do not include warnings or instructions on using protective wear that could prevent or limit exposure.

Another issue outlined in lawsuits involves how manufacturers market their hair dyes. For example, Wella refers to chemical-based products as natural and nourishing. Lawsuits say this is an attempt to draw in health-conscious users without warning of serious risks.

Who Qualifies for a Hair Dye Lawsuit?

You may qualify for a hair dye lawsuit if you developed cancer after working in a salon where you were regularly exposed to certain types of hair dye.

Some studies highlight an increased risk of bladder cancer in hairstylists. According to the American Cancer Society, non-Hodgkin lymphoma, leukemia and breast cancer have also been linked to hair dye exposure.

What Evidence Is Needed for a Hair Dye Lawsuit?

Generally, you will need to document your cancer diagnosis and your exposure to hair dye to file a lawsuit.

Your health documentation can include medical records that verify your diagnosis or treatment, which you can get from your doctor. You should also document any comments your doctor makes linking hair dye exposure to your health concerns.

Plaintiff Hector Corvera, who was diagnosed with bladder cancer after working as a stylist for more than 40 years, told NBC News that his doctor commented, “That explains it,” after learning what he did for a living.

In addition to medical records, you may need to provide evidence of your exposure to hair dye, including specific brands or products.

Hair Dye Lawsuits Against Major Manufacturers

Several major hair dye manufacturers have been listed as defendants in lawsuits. These cases claim manufacturers knew or should have known that their products may cause cancer.

L’Oréal Lawsuits Over Chemical Hair Dyes

L’Oréal’s hair dye products are extremely popular, but lawsuits claim that some of its hair dyes contain carcinogens that may have led to the development of cancer in some hairstylists.

L’Oréal acknowledges on its website that p-paraphenylenediamine (PPD), a type of aromatic amine that lawsuits say has been tied to cancer, is still used in some of its hair dye products. But, the company claims it follows strict usage limits.

“Our hair dye products containing para-phenylenediamine (PPD) comply with one of the strictest cosmetics regulations which is the EU regulation,” L’Oréal says. “We have been able to optimize the PPD concentration levels in hair dye products in order to always ensure they are well below the authorized level which is 2%.”

L’Oréal is also involved in litigation over some of its chemical hair relaxer products, which help straighten curly hair.

Nearly 10,000 hair relaxer lawsuits are currently pending in federal court, claiming that these products cause uterine, ovarian and endometrial cancer.

Clairol Facing Legal Challenges for Toxic Ingredients

Clairol, a subsidiary of Wella that has been selling hair dye to salons in the U.S. since the 1950s, has also been named in lawsuits over potential cancer risks.

The company was a trailblazer in the hair dye industry. Its innovative marketing strategies played a key role in establishing hair coloring as a standard part of American culture.

Lawsuits argue that the company ignored possible health risks as it marketed its hair dye products directly to salons and stylists.

“Clairol continues to prioritize profit over stylists’ and consumers’ health,” a lawsuit states. “… Clairol’s salon-use dyes do not carry visible warnings on the risks of prolonged exposure, nor do they encourage the use of protective items.”

How to File a Hair Dye Lawsuit

You may be able to file a hair dye lawsuit by signing up for a free case review and connecting with an experienced product liability lawyer through Drugwatch.

Our partners have spent years taking on major corporations in similar litigations and can help you determine if you have a case against a hair dye manufacturer.

A lawyer may also be able to assist you in tracking down medical records or documentation that can help you build your case and demonstrate how hair dye exposure has impacted you.

What Compensation Can Plaintiffs Receive?

As part of these lawsuits, plaintiffs are demanding several different types of damages and monetary compensation.

Damages Listed in Hair Dye Lawsuits
  • Medical expenses
  • Past and future economic and non-economic damages
  • Punitive damages

A cancer diagnosis can dramatically alter your life by impacting your health and leading to severe economic consequences. Medical expenses can be extreme, and you might be unable to work due to your condition. Hair dye lawsuits seek justice for these possible losses.

Please seek the advice of a medical professional before making health care decisions.