If you or a loved one have used hair-straightening products and you have been diagnosed with Uterine cancer, Breast cancer or Infertility you may be entitled to Significant Compensation

NIH Study finds Hair straightening chemicals associated with higher uterine cancer risk

The National Institute of Environmental Health Sciences(NIEHS) conducted a study called The Sister Study, which found that women who used chemical hair straightening products were at higher risk for uterine cancer & breast cancer when compared to women who did not report using these products.

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Uterine Cancer

The National Institutes of Health (NIH) recently published data from their study, which included 33,497 U.S. women ages 35-74. The women were followed for almost 11 years, and during that time 378 uterine cancer cases were diagnosed.

The researchers found that women who had never used hair straighteners were at a 1.64 % risk of developing uterine cancer, while women who did were at double the risk. Moreover, black women were at 60 % higher risk of developing uterine cancer as straightener use was much more common among African American women.

Breast cancer

A study published by the NIH on December 4, 2019, in the International Journal of Cancer suggested that breast cancer risk increased with more frequent use of permanent hair dye and chemical hair straighteners. 

Women who used hair-straightening products at least every five to eight weeks were about 30% more likely to develop breast cancer. While the association between straightener use and breast cancer was similar in African American and white women, straightener use was much more common among African American women overall. 


The lawsuit was filed in federal court in Chicago days after a study from the U.S. National Institute of Environmental Health Safety (NIEHS) found that hair-straightening products may significantly increase the risk of uterine cancer among frequent users.


Uterine cancer is the most common female reproductive system cancer, with 65,950 estimated new cases in 2022.


Some common ingredients of hair straighteners such as parabens, bisphenol A, heavy metals, and formaldehyde may contribute to the elevated risk of uterine cancer.

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Hair Straighteners and Cancer Lawsuits: Understanding the Legal Landscape

Hair straighteners and hair relaxers have long been popular cosmetic products used to achieve sleek and straight hair. However, recent legal developments have brought attention to potential health risks associated with these products, leading to a surge in lawsuits against prominent cosmetic companies. Notably, L’Oréal, a leading French cosmetic company, is facing litigation from several women who claim that the chemicals in their hair straightener products have led to serious medical conditions, including uterine cancer.

Allegations Against L’Oréal

Numerous lawsuits, initiated in October of the previous year, allege that L’Oréal’s hair straightener products contain unsafe components, increasing the risk of various medical conditions for the users. These legal actions follow a scientific study linking the chemicals in hair straighteners, specifically endocrine-disrupting chemicals (EDCs), to an elevated risk of uterine cancer.

Current Status of Lawsuits

As of now, more than ten cases have been filed across the country by women who used L’Oréal’s hair straighteners and subsequently developed conditions like uterine cancer, breast cancer, fibroids, and other health issues. A motion has been filed to centralize these cases in multidistrict litigation (MDL) in the Northern District of Illinois, arguing that MDL would streamline the legal process and conserve court resources.
The Judicial Panel on Multidistrict Litigation is set to hear this motion on January 26, 2023, in Miami, Florida, marking a crucial step in the legal proceedings.

Current Status of Lawsuits

Several cases have been filed against L’Oréal in various district courts. Plaintiffs include individuals and class-action groups, each asserting their injuries and seeking legal recourse:
  1. Angela Burton, Natasha M. Casby, Bridgette Quinn, and Sondra Loggins vs. L’Oréal, Soft Sheen/Carson
    District Court: Eastern District of Michigan
    Injury: Seeking economic damages and medical monitoring for potential future medical conditions due to hair straightener use.
  2. Tamika Smith vs. L’Oréal, Soft Sheen/Carson, Strength of Nature, Godrej, PDC Brands, and Parfums de Coeur
    District Court: Northern District of Illinois
    Injury: Uterine cancer and endometriosis.
  3. Evelyn Williams, Tabatha Taggart, Tameka M. Meadows, Deborah Taylor, and Daphne Valentine vs. L’Oréal, Soft Sheen/Carson
    District Court: Northern District of Illinois
    Injury: Seeking economic damages and medical monitoring for potential future medical conditions due to hair straightener use.
… (and additional cases)

Scientific Findings and Lawsuit Claims

A pivotal study released in October 2022 identified a correlation between the use of hair straighteners and an increased risk of uterine cancer. The study, spanning nearly 11 years with over 34,000 participants, linked endocrine-disrupting chemicals in hair straighteners to hormonal imbalances, resulting in various adverse health effects. This research has fueled claims against L’Oréal and other cosmetic companies, with plaintiffs asserting violations of state consumer fraud laws, failure to warn, design defects, and other legal claims.

Legal Implications and Best Case Leads

The lawsuits underscore the potential health risks associated with widely used hair straightener products. If L’Oréal or other cosmetic companies were aware of these risks, they could face significant legal consequences. Best Case Leads, an advertising agency specializing in assisting law firms, can provide essential tools and strategies to attract potential plaintiffs for hair straightener cancer lawsuits. Utilizing media outlets, paid search, and SEO, Best Case Leads can tailor a comprehensive mass tort campaign to support law firms in their pursuit of justice for affected individuals.

If your firm is interested in handling hair straightener cancer cases, contact Best Case Leads today to explore effective marketing strategies and campaign customization.

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