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If you are a naturalista who uses hair smoothing products at home or receives them from a salon, how safe are they? Finding ways to smooth out super curly, coily hair has been an issue for hundreds of years. From heat pressing the hair to schlopping on creamy caustic materials, hair straightening will never grow old and will continue to be desired by people around the world.

Formaldehyde, often found in Blowout treatments like Keratin and Brazilian has been long used for many unnatural processes like making wrinkle-free clothing, ink production, resins for construction materials, natural gas drilling disinfectant production and for embalming.

While you can check your labels at home, you may not be able to do the same at a salon. Also, if a package states that the product is “For Professional Use” it is not required to list all the ingredients on the package. Should you run into this issue, it is best to do your research.

Take this list of commonly used names for formaldehyde when you shop for your natural hair care products.


Methylene glycol


Methylene oxide


Formic aldehyde




Timonacic acid

Thiazolidinecarboxylic acid