After investigating some complaints, the U.S. Department of Labor's Occupational Safety and Health Administration issued a hazard alert on Monday.
Formaldehyde exposure has been linked to nose and lung cancer.
To avoid formaldehyde exposure, OSHA says that hair care professionals should not use products that contain the following:
-Chemical Abstract Service Number 50-00-0
OSHA has ongoing investigations at salons and of importers/distributors/manufacturers relating to hair smoothing and straightening products.