State litigation guide · South Dakota

Hair Relaxer Cancer Lawsuits in South Dakota

Time limits apply in South Dakota. Find out if you still qualify.

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Statute of limitations — South Dakota

South Dakota: 3 years from diagnosis or discovery (S.D. Codified Laws § 15-2-12.2)

3 years from diagnosis

South Dakota data

Exposure in South Dakota

South Dakota's 3-year statute provides additional time beyond the 2-year standard in many states

3-year filing window

Source: S.D. Codified Laws § 15-2-12.2

The FDA proposed banning formaldehyde from hair straighteners in 2023 but has failed to finalize the rule

FDA inaction

Source: FDA Proposed Rule, October 2023

Medical resources

Clinics & Specialists in South Dakota

Sanford USD Medical Center — Cancer Center

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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