Toxicology

Braiding hair extensions are widely used consumer beauty products often worn for extended periods and handled frequently during installation and daily styling. Use is particularly widespread among Black women and girls, which promotes the

Per- and polyfluoroalkyl substances (PFAS) are a class of ubiquitous and persistentorganic pollutants that are used in a wide variety of applications such as in foodpackaging, waterproof materials, and personal care products. It is estimated that 97% ofpeople living in the United States have measurable concentrations of PFAS in their blood.1

Polychlorinated biphenyls (PCBs) are persistent environmental contaminants that continue to pose health risks despite being banned decades ago. Developmental exposure to PCBs has been associated with neurodevelopmental disorders that exhibit pronounced sex-specific patterns.

Tattoos have a rich history as an expressive form of body modification and cultural symbolism, with