Study finds many chemicals in extensions and braiding hair
Researchers analyzed 43 hair extension and braiding products marketed to Black women and detected a total of 169 different chemicals. Among those identified were substances classified as potentially harmful, including flame retardants and pesticides. The study highlights how everyday cosmetic and hair-care products can be sources of chemical exposure, particularly for communities that use these products regularly.
Why these findings matter
- Repeated and prolonged contact may increase cumulative exposure for users, salon workers and stylists who handle large volumes of extensions and braiding hair.
- Some of the detected compounds have links, in other research, to hormone disruption, respiratory effects, or other health concerns when exposure levels are significant.
- Regulatory oversight for cosmetic and accessory products varies, so consumers may not be aware of what chemicals are present or what safety testing has been done.
Key takeaways
- The analysis covered a limited sample of products, so findings indicate a potential problem but do not measure users’ actual body burdens.
- The study does not establish direct health outcomes; it identifies chemical presence that merits further investigation into exposure levels and long-term risk.
- Consumers and workers can reduce potential risks by improving ventilation during styling, washing hands after handling products, and advocating for clearer labeling and safety testing.
Next steps
Researchers and public-health advocates are likely to call for broader testing, better product transparency, and regulatory attention to chemicals used in products that disproportionately affect specific communities. For individuals, staying informed and following safety practices in salons can help reduce avoidable exposures.


