State litigation guide · Missouri

Hair Relaxer Cancer Lawsuits in Missouri

Time limits apply in Missouri. Find out if you still qualify.

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Statute of limitations — Missouri

Missouri: 5 years from diagnosis or discovery (Mo. Rev. Stat. § 516.120)

5 years from diagnosis

Missouri data

Exposure in Missouri

Missouri offers one of the longest product liability statutes in the country — providing maximum time to file

5-year filing window

Source: Mo. Rev. Stat. § 516.120

St. Louis has a large Black community that was heavily targeted by hair relaxer brands for decades

St. Louis priority market

Source: US Census Bureau 2020

Medical resources

Clinics & Specialists in Missouri

Siteman Cancer Center at Washington University — Gynecologic Oncology

FAQ

Frequently Asked Questions

36 QUESTIONS

Chemical hair relaxers contain endocrine-disrupting chemicals (EDCs) — phthalates, parabens, formaldehyde, BPA, and cyclosiloxanes — that mimic estrogen when absorbed through the scalp. Chronic estrogen overstimulation promotes abnormal growth in hormone-sensitive tissues. The NIH Sister Study found that frequent relaxer users face a 155% increased risk of uterine cancer and a 119% increased risk of ovarian cancer.

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