If you long for sleek, shiny locks — and have a few hundred bucks to spend — then you might be tempted by the popular Brazilian Blowout line of hair-straightening products. But be warned: The products have “dangerously high levels” of cancer-causing formaldehyde, according to the FDA. In fact, the FDA’s analysis found that the products contain 8.7 percent to 10.4 percent formaldehyde, putting it in the range of embalming fluid used by funeral homes — OSHA requires levels of 0.1 percent to have an occupational hazard alert.

 

Brazilian Blowout users have reported nosebleeds, chest pain, headaches, dizziness, vomiting, rashes and breathing problems, and some salon workers and customers even wear gas masks during the procedure.