Written By : Michelle Llamas
Edited By : Amy Edel
Legally Reviewed By : John Foley
This page features 10 Cited Research Articles

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Latest Chemical Hair Straightener Lawsuit Updates

As of August 2023, there were 275 hair straightener lawsuits pending in Illinois multidistrict litigation. Litigation is in the early stages, and lawyers expect many more people to file hair straightener.

Lawyers on both sides are trying to determine how discovery will be conducted.

Recent updates include:

  • August 2023: Out of 295 lawsuits originally filed, 275 remain active in the MDL.
  • July 2023: 236 cases are pending in the MDL.
  • June 2023: A total of 152 lawsuits were originally filed, and there are active 149 cases.
  • March 2023: 78 cases pending in MDL.
  • February 2023: The Panel on Multidistrict Litigation transferred hair straightener lawsuits to the newly formed MDL in the Northern District of Illinois.
  • January 2023: Tamara Sigars filed a lawsuit that claimed hair relaxers made by L’Oreal and other companies caused her to develop ovarian cancer.

When the Illinois MDL was first formed, it started with more than a dozen individual injury cases and has since grown to include over two hundred plaintiffs. Lawyers expect this litigation to grow because millions of people used these products over the years.

Why Are People Filing Chemical Hair Straightener Lawsuits?

Women are filing lawsuits against chemical hair straightener companies after a 2022 National Institutes of Health study found women who used chemical hair straighteners had a greater risk of developing uterine cancer. Defendants include L’Oreal, Soft Sheen Carson, Strength of Nature and others.

The study, published in the Journal of the National Cancer Institute, found women who used chemical straighteners more than four times a year had more than double the risk of uterine cancer. Studies also linked chemical hair relaxers to increased uterine fibroid and endometriosis risk. Uterine cancer rates among Black women have been rising, and researchers say chemical straighteners may be to blame. About 60% of women in the study who reported using hair straighteners were Black women.

People are filing lawsuits for compensation including medical bills, pain and suffering and lost wages. Some women who filed lawsuits have had to have hysterectomies to treat uterine cancer, preventing them for having children.

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Status of Chemical Hair Straightener Lawsuits

In November 2022, plaintiffs’ lawyers asked the U.S. Judicial Panel on Multidistrict Litigation to consolidate all of the chemical hair straightener lawsuits in multidistrict litigation in Illinois. By February 2023, the cases were consolidated into MDL number 3060, IN RE: Hair Relaxer Marketing, Sales Practices, and Products Liability Litigation in the Northern District of Illinois.

As of May 15, 2023, there were 123 lawsuits pending in the MDL. In March 2023, there were only 74 cases. Lawyers expect the litigation to continue growing. In addition to the product liability cases in the MDL which demand compensation for injuries, manufacturers also face chemical hair straightener class action lawsuits demanding a refund for the purchase price of the products.

There have been no settlement or jury verdicts in these cases yet, though some lawyers estimate a chemical hair straightener settlement could be anywhere from $100,000 to $1.5 million because of the cancer claims. Experts have based these figures on similar product liability cancer claims.

Health Claims in Chemical Hair Straightener Lawsuits

Chemical hair straightener lawsuits claim chemicals in these products have caused women to develop uterine cancer, breast cancer, endometriosis and fibroids. Though, many of lawsuits focus on breast cancer, lawyers are accepting cases for these four conditions. Studies have linked endocrine disrupting chemicals, or EDCs, in chemical hair straighteners to various side effects and health problems such as cancer, endometriosis and uterine fibroids. The risk of these conditions goes up with frequent use, and many plaintiffs in chemical hair straightener lawsuits have been using these products for years.

Researchers define frequent use as more than four times a year, or every five to eight weeks. Dangerous chemicals in hair straighteners include phthalates, parabens and a very toxic chemical called DEHP.

Uterine Cancer

Hermania E. Bates filed a chemical hair straightener lawsuit against L’Oreal, Soft Sheen Carson and other hair straightener manufacturers in February 2023 after she developed uterine cancer. According to her lawsuit, “Ms. Bates’ cancer diagnosis was directly and proximately caused by her regular and prolonged exposure to phthalates and other endocrine disrupting chemicals found in Defendants’ hair care products.”

In the 2022 NIH study, researchers looked at data from 33,947 women aged 35 to 74. Women who reported using hair straighteners had higher incidence rates of uterine cancer. Women who used the products more than four times in 12 months had more than double the risk.


Some women who filed claims in hair straightener lawsuits claimed endocrine disrupting chemicals in hair straighteners and relaxers led them to develop endometriosis.

Researchers believe endometriosis may be caused by hormonal issues. Phthalates, parabens and EDCs like those found in chemical hair straighteners and hair dye could disrupt hormones and increase the risk of endometriosis, according to some studies. One study published in 2018 in the Journal of Human Reproductive Sciences found high levels of phthalates in women diagnosed with endometriosis.

Uterine Fibroids

According to claims in chemical hair straightener lawsuits, “uterine fibroids, or uterine leiomyomata, are associated with phthalate metabolites and BPA found in hair care products.” A November 2022 study by Northwestern Medicine found women with high exposures to phthalates such as DEHP and its metabolites have a higher risk of developing symptomatic fibroids. Researchers found DEHP activates certain hormone receptors and causes fibroid tumor growth.

Prior to this study, researchers established a link between uterine fibroids and phthalates. Scientists also discovered DEHP can pass from a mother to a baby and gradually release from consumer products into indoor environments.

What Brands Have Been Named in the Chemical Hair Straightener Lawsuits?

Plaintiffs have filed lawsuits against L’Oreal and other hair relaxers makers and popular brands such as Soft & Beautiful and Dark and Lovely.

“Defendants knew or should have known that their hair relaxer products were dangerous and defective because they contain highly toxic EDCs and they manufactured, marketed and sold them anyway,” lawsuits claim.

Chemical hair straightener brands named in lawsuits include:
  • Strength of Nature Global LLC
  • Soft & Beautiful
  • Motions
  • TCB Naturals
  • Just for Me
  • Namaste
  • Olive Oil Girls
  • L’Oreal
  • Dark and Lovely
  • Optimum

In addition to individual injury lawsuits, defendants also face a class action in Illinois court that demands a refund for the full purchase price of the products. The lawsuits claim, “The presence of EDCs in Defendants’ Toxic Hair Straightener was not disclosed in the products’ label, in violation of state and federal law.”

Who Qualifies to File a Chemical Hair Straightener Lawsuit?

You may qualify to file a chemical hair straightener lawsuit if you used a chemical hair straightener or relaxer and were later diagnosed with uterine cancer, breast cancer, uterine fibroids or endometriosis. Only a lawyer can tell you if you qualify, so make sure you speak to an attorney right away. There may be time limits to file your claim.

When you speak to a lawyer, they may ask you questions about your experience with chemical hair straighteners. Have any receipts and information about your diagnosis available. If you can’t get these, a lawyer may be able to help you obtain medical records.

Please seek the advice of a qualified professional before making decisions about your health or finances.
Last Modified: August 21, 2023

10 Cited Research Articles

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  1. United States Judicial Panel on Multidistrict Litigation. (2023, August 15). MDL Statistics Report - Distribution of Pending MDL Dockets by District. Retrieved from https://www.jpml.uscourts.gov/sites/jpml/files/Pending_MDL_Dockets_By_District-August-15-2023.pdf
  2. United States Judicial Panel on Multidistrict Litigation. (2023, July 17). MDL Statistics Report - Distribution of Pending MDL Dockets by District. Retrieved from https://www.jpml.uscourts.gov/sites/jpml/files/Pending_MDL_Dockets_By_District-July-17-2023.pdf
  3. U.S. Judicial Panel on Multidistrict Litigation. (2022, November 15). In Re: Hair Relaxer Products Liability Litigation. Memorandum in Support of Plaintiffs’ Motion for Transfer of Actions Pursuant To 28 U.S.C. § 1407 for Coordinated or Consolidated Pretrial Proceedings. Retrieved from https://www.aboutlawsuits.com/wp-content/uploads/2022-11-15-MDL-Motion.pdf
  4. Samuelson, K. (2022, November 14). Uterine fibroid growth activated by chemicals found in everyday products. Retrieved from https://news.northwestern.edu/stories/2022/11/uterine-fibroid-growth-activated-by-chemicals-found-in-everyday-products/
  5. U.S. District Court, Northern District of Illinois. (2022, November 3). Class Action Complaint. Retrieved from https://www.aboutlawsuits.com/wp-content/uploads/2022-11-3-darklovely-class-action.pdf
  6. Howard, J. (2022, October 24). US woman files lawsuit against L’Oréal, claiming chemical hair straightening products are linked to her cancer. Retrieved from https://www.cnn.com/2022/10/24/health/hair-straightening-products-lawsuit
  7. U.S. District Court, Northern District of Illinois. (2022, October 21). Mitchell v. L’Oreal USA, Inc. et al. Complaint. Retrieved from https://www.lawsuit-information-center.com/files/2022/10/Hair-Relaxer.pdf
  8. Chang, C-J et al. (2022, October 17). Use of Straighteners and Other Hair Products and Incident Uterine Cancer. Retrieved from https://pubmed.ncbi.nlm.nih.gov/36245087/
  9. National Institute of Environmental Health Studies. (2019, December 4). Permanent Hair Dye and Straighteners May Increase Breast Cancer Risk. Retrieved from https://www.niehs.nih.gov/news/newsroom/releases/2019/december4/index.cfm
  10. Nazir, S. et al. (2018). Women Diagnosed with Endometriosis Show High Serum Levels of Diethyl Hexyl Phthalate. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6094529/