Scientists find cancer-linked chemicals in popular hair extensions
A study detected dozens of hazardous chemicals in popular hair extensions—flame retardants, organotins, and multiple compounds linked to breast cancer and hormone disruption—with some samples exceeding EU safety limits and many chemicals appearing on California's Proposition 65 list, prompting calls for stronger oversight and ingredient-disclosure laws in New York, New Jersey, and federally.
Why it mattersDetection of organotins and Proposition 65-listed breast-cancer chemicals implies regulators and retailers must tighten sourcing and labeling.