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Despite U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) warnings about dangerous levels of formaldehyde released into the air from hair smoothing or straightening products, salon workers continue to suffer formaldehyde exposure in the workplace.

Concerns about formaldehyde in salon hair smoothing treatments first arose in 2010 when an Oregon salon stylist reported respiratory problems, eye irritation and nosebleeds when using a product labeled Brazilian Blowout. Oregon OSHA investigated the claim and found that although the product labeling said “formaldehyde free,” it actually contained formaldehyde.

In 2011, OSHA responded to complaints of formaldehyde exposure and issued citations and fines as high as $17,500 to 23 salons and beauty schools in New York, New Jersey, Pennsylvania, Florida, Illinois, Ohio, Connecticut and Massachusetts for failing to protect workers from overexposure and potential exposure to formaldehyde.

Primary routes of formaldehyde exposure for salon workers include inhalation of formaldehyde gas or vapor, and absorption through the skin via contact with products containing formaldehyde. It can irritate the eyes and nose and cause allergic reactions of the skin, eyes and lungs. It is also a cancer hazard.

OSHA requires manufacturers, importers and distributors of products that contain formaldehyde or release formaldehyde during use to list the chemical and exposure hazards on the product labeling and Material Safety Data Sheet (MSDS).

Salons using formaldehyde products must protect workers and customers by complying with OSHA’s formaldehyde standard.

Hair smoothing products that expose workers to formaldehyde may not always list the word “formaldehyde” on the label, instead listing it as methylene glycol, formalin, methylene oxide, paraform, formic aldehyde, methanal, oxomethane, oxymethylene, or CAS Number 50-00-0. These are all names for formaldehyde under OSHA's Formaldehyde standard. Other chemicals such as timonacic acid (also called thiazolidinecarboxylic acid) can release formaldehyde under certain conditions, such as those present during the hair smoothing treatment process.

“We want to make sure that salon owners are aware that if they use these products, they have to implement protective measures such as air monitoring and training,” said Assistant Secretary of Labor for OSHA Dr. David Michaels in a statement. “What is very troubling to the agency is that some of these products clearly expose workers to formaldehyde even when the label states they are ‘formaldehyde free.’”

OSHA testing has identified several hair smoothing products that can expose workers to formaldehyde even though formaldehyde is not listed on the label, including the following brands:

Brazilian Blowout

  • Acai Professional Smoothing Solution
  • Professional Brazilian Blowout Solution


  • Brasil Cacau
  • Acai Therapy


  • Keratin Complex Smoothing Therapy

    • Natural Keratin Smoothing Treatment
    • Natural Keratin Smoothing Treatment Blonde
    • Express Blow Out

Marcia Teixeira

  • Brazilian Keratin Treatment
  • Advanced Brazilian Keratin Treatment
  • Chocolate Extreme De-Frizzing Treatment
  • Soft Gentle Smoothing Treatment
  • Soft Chocolate Gentle Smoothing Treatment

“The best way to control exposure to formaldehyde is to use products that do not contain formaldehyde. Salons should check the label or product information to make sure it does not list formaldehyde, formalin, methylene glycol or any of the other names for formaldehyde,” said Michaels. “If salon owners decide to use products that contain or release formaldehyde, then they must follow a number of protective practices — including air monitoring, worker training and, if levels are over OSHA limits, good ventilation or respirators.”


  1. Gravatar for Bonnie Duerst
    Bonnie Duerst

    Most of the information/MSDS regarding safe practices for hair smoothing products includes proper/adequate salon ventilation or local exhaust ventilation but never explains what that means. Some manufacturers suggest opening windows/doors or using fans but this will only help to circulate the vapors and dusts to the entire salon. All salons no matter the size need chemical source capture ventilation to lower the exposure of vapors & dust to the breathing zones of the stylist and client.


    Toxic and Hazardous Substances ~ 1910.1048 App A

    Engineering Controls

    Ventilation is the most widely applied engineering control method for reducing the concentration of airborne substances in the breathing zones of workers.

  2. Gravatar for Jeff Cardarella
    Jeff Cardarella

    The Professional Keratin Smoothing Council PRESS RELEASE/OCTOBER 2011 states that appropriate salon ventilation should always be used for keratin hair smoothing treatments. Salons that are not equipped with salon source capture ventilation should NOT provide these services until this situation is corrected.

    New technology (salon chemical source capture ventilation) has been developed and proven to be highly effective for improving salon air quality by minimizing exposure to formaldehyde, as well as the many gases, vapors and dusts found in salons.

    Press Release Link:

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