Hair Relaxer Lawsuit (2026): Claims, Status & Who May Qualify

Hair relaxer lawsuits allege that long-term use of chemical hair straighteners and relaxers is linked to uterine cancer, ovarian cancer, and related conditions, citing federally funded research that found a higher uterine cancer risk among frequent users. Thousands of these claims are consolidated in active federal litigation as of June 2026.

This page is part of our Mass Tort & Product Liability overview.

What chemical hair relaxers are and the alleged harm

Chemical hair relaxers and straighteners are products applied to the hair and scalp to break down its natural curl pattern and create a straighter, smoother texture. They are used by people across many backgrounds, and surveys of users tied to the litigation show a large share of self-identified Black women, who on average begin using these products earlier and use them more often. The lawsuits allege that repeated, long-term use of these products contributed to hormone-sensitive cancers and conditions, most prominently uterine cancer, as well as endometrial cancer, ovarian cancer, and uterine fibroids that sometimes require a hysterectomy. The theory of harm focuses on chemicals that can be present in or released by some formulations, including formaldehyde and endocrine-disrupting compounds such as phthalates, parabens, and certain metals. These are allegations being litigated, not findings that any product caused any individual's illness.

Note: A lawsuit alleging a link is not the same as a court or agency finding that a hair relaxer caused a specific person's cancer. Causation in each case is contested and must be proven with evidence.

What the science and regulators say

The key research is the Sister Study, a large cohort study run by the National Institute of Environmental Health Sciences, part of the National Institutes of Health. Published in the Journal of the National Cancer Institute in October 2022, it followed 33,947 U.S. women for roughly 11 years, during which 378 uterine cancer cases were diagnosed. Researchers found that women who reported frequent use of chemical straighteners, defined as more than four times in the prior year, were more than twice as likely to develop uterine cancer than women who did not use the products. The authors estimated that about 1.64 percent of women who never used straighteners would develop uterine cancer by age 70, compared with about 4.05 percent of frequent users. Importantly, the study identified an association and did not prove that the products cause cancer, and it did not collect information on specific brands or ingredients. The National Cancer Institute separately notes that some straightener formulations contain formaldehyde, a carcinogen, and that a large cohort study linked recent straightener use to a higher uterine cancer risk. These are scientific findings about populations, not determinations about any individual case.

The status of the hair relaxer litigation (as of June 2026)

Federal hair relaxer cases are consolidated for coordinated pretrial proceedings in multidistrict litigation, In re Hair Relaxer Marketing, Sales Practices, and Products Liability Litigation, MDL No. 3060, before Judge Mary M. Rowland in the U.S. District Court for the Northern District of Illinois. The Judicial Panel on Multidistrict Litigation created the MDL by transfer order in February 2023, and it has grown into one of the larger active MDLs, with thousands of actions pending as of June 2026. The named defendants include manufacturers such as L'Oreal USA and others associated with widely sold relaxer brands. As of June 2026, the litigation was in the bellwether and general-causation phase, with the parties briefing expert-evidence challenges that will help shape whether and how cases proceed to trial. No global settlement had been finalized, and the defendants deny wrongdoing. Bellwether trials, expert rulings, and any settlement developments can change the posture of this litigation.

Note: MDL case counts, bellwether schedules, and settlement developments change over time. Treat the figures here as a snapshot as of June 2026 and check current court records for the latest status.

Who may be involved

The people generally involved in hair relaxer litigation fall into a few broad categories, described here neutrally rather than as a promise that anyone qualifies. The claims typically involve people who used chemical hair relaxers or straighteners regularly and over a span of years and were later diagnosed with uterine cancer, endometrial cancer, or ovarian cancer, and some claims involve uterine fibroids that led to surgery such as a hysterectomy. Family members of someone who died from these conditions may also be involved through wrongful-death or survival claims, depending on state law. Whether any particular person has a viable claim depends on the specific facts, including the diagnosis, the documented history and frequency of product use, the timeline, and the applicable state law. General eligibility cannot be determined from a web page.

Deadlines and why they matter

Every state sets its own statute of limitations, the legal time limit for filing a personal-injury or wrongful-death lawsuit. These deadlines vary widely from state to state and are commonly measured from the date of diagnosis or, under some states' discovery rules, from when a person knew or reasonably should have known that an injury may be connected to a product. Because the limits differ and the trigger date can be disputed, there is no single national deadline that applies to everyone, and this page does not and cannot tell you what your specific deadline is. Missing the applicable deadline can permanently bar a claim regardless of its underlying merit, which is why people who believe they may be affected often consult a licensed attorney promptly rather than waiting.

How to evaluate your options

The most reliable way to understand whether you may have a claim is to speak with an attorney licensed in your state, because the analysis depends on the facts and on state law that general information cannot resolve. It can help to gather records before that conversation, including medical records and the pathology report confirming the diagnosis, any documentation or recollection of which hair products were used and how often and for how long, and proof of purchase where it exists. Most attorneys who handle mass-tort cases offer a free initial consultation and work on a contingency-fee basis, meaning they are paid a percentage only if the case results in a recovery, so an evaluation typically creates no obligation and no upfront cost. A consultation is informational; it is not a guarantee of eligibility, compensation, or any particular outcome.