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The Department of Health and Human Services lists formaldehyde as a carcinogen, and last year the FDA issued a warning against chemical hair straighteners that release formaldehyde when heated up ...
Methanediol, rather than formaldehyde, is listed as one of the main ingredients of "Brazilian blowout", a hair-straightening formula marketed in the United States.The equilibrium with formaldehyde has caused concern since formaldehyde in hair straighteners is a health hazard.
Brazilian hair straightening treatments are meant to mostly or partially eliminate hair frizz and straighten curls and waves. They can be performed on all types of hair, whether natural or chemically treated (bleached, highlighted, colored, permed, relaxed or previously straightened). The effect usually lasts about three months.
An FDA fact sheet currently advises against the use of hair-straightening products containing formaldehyde and related compounds. For more from NBC BLK, sign up for our weekly newsletter . Show ...
Not all chemical hair-straighteners include it, but many do include components that, once heated, can release formaldehyde. It is highly toxic and linked to certain cancers, according to the ...
Hair straightening is a hair styling technique used since the 1890s involving the flattening and straightening of hair in order to give it a smooth, streamlined, and sleek appearance. [1] It became very popular during the 1950s among black males and females of all races.