Formaldehyde Levels Found in hair salons, hair smoothing and straightening products may contain or release a chemical, formaldehyde. In three salons, Federal OSHA found that stylists using either Brazilian Blowout Acai Professional Smoothing Solution or Cadiveu Brasil Cacau were exposed to formaldehyde above OSHA’s 15-minute short term exposure limit (STEL) of 2 parts formaldehyde per million parts air (ppm), putting their health at risk. In one salon, formaldehyde levels during the blow drying phase of treatment were measured at five times the OSHA STEL. All three salons were issued OSHA citations and two were issued fines for failing to protect workers from the health risks of formaldehyde. In addition, OSHA issued citations and fines to other salons using products that contained or could release formaldehyde because they did not follow the requirements in OSHA’s formaldehyde standard to test the air to determine formaldehyde levels and to provide workers training and information on the health hazards and signs and symptoms of exposure to formaldehyde.