Hair Extensions Linked to Infertility and Cancer? Dr Aaron Mujajati Highlights New 2026 Study

A new scientific study has sparked concern among health experts after suggesting that many hair extension products sold worldwide may contain hazardous chemicals linked to cancer, hormone disruption, and reproductive health problems. Zambian medical doctor Dr Aaron Mujajati has shared findings from the research, warning women to be more cautious about the types of hair […]

A new scientific study has sparked concern among health experts after suggesting that many hair extension products sold worldwide may contain hazardous chemicals linked to cancer, hormone disruption, and reproductive health problems.

Zambian medical doctor Dr Aaron Mujajati has shared findings from the research, warning women to be more cautious about the types of hair extensions they use and encouraging greater transparency from manufacturers.

According to Dr Mujajati, the findings come from a 2026 study published in the scientific journal Environment & Health and conducted by researchers from the Silent Spring Institute.

The researchers analysed 43 popular hair extension products, including human hair, synthetic hair, and plant-based extensions.

According to the study, more than 90 percent of the products tested contained chemicals that researchers associated with cancer, hormone disruption, or reproductive health concerns.

Among the most concerning findings was that 10 percent of the samples contained organotins, highly toxic industrial chemicals commonly used in plastics. The study reportedly found that some of these chemicals exceeded internationally accepted safety limits.

Researchers also reported that 83 percent of the hair extension products contained chemicals linked to an increased risk of breast cancer, including substances such as benzene, formaldehyde, and styrene, all of which have been associated with health risks following prolonged exposure.

Dr Mujajati further noted that follow-up testing conducted by Consumer Reports reportedly detected lead in nearly every hair extension product tested, with human hair extensions recording the highest concentrations.

He explained that because hair extensions remain in close contact with the scalp for extended periods, there is concern that harmful substances may be absorbed through the skin.

“The scalp contains many blood vessels, making it possible for certain chemicals to enter the body more easily during prolonged exposure,” he said.

Dr Mujajati described the findings as an important public health concern, particularly because women are the primary users of hair extension products.

While the study raises concerns, health experts caution that exposure to a hazardous chemical does not automatically mean a person will develop cancer or become infertile. The actual risk depends on factors such as the amount of exposure, the duration of contact, and the specific chemical involved.

To reduce potential exposure, Dr Mujajati advised women who use synthetic braiding hair to wash it before installation.

He recommended soaking synthetic hair in warm water mixed with apple cider vinegar or washing it with a mild shampoo to help remove chemical coatings that may remain from the manufacturing process.

He also encouraged consumers to buy products from manufacturers that provide greater transparency about the materials used and to look for brands that have undergone independent laboratory testing.

The study has renewed calls for stricter safety standards in the beauty industry, with experts urging manufacturers to disclose the chemicals used in cosmetic and hair products.

Consumers are also encouraged to remain informed and to seek reliable health information when making decisions about personal care products.

Although more research may be needed to determine the long-term effects of these chemicals, the findings have intensified discussions about product safety and the importance of protecting consumers from unnecessary exposure to potentially harmful substances.