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In women who did not use hair-straightening chemical products in the previous 12 months, the study found the risk of developing uterine cancer by age 70 to be about 1.6%.
Concern about the health risks associated with chemical hair straighteners has grown over the last year since the National Institutes of Health released a study that found that women who used them ...
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.
Women using chemical hair-straightening products are at a higher risk of uterine cancer. Researchers noted that Black women may have a higher risk because they are more likely to use such products.
The heat was controlled according to the type of hair by a thermostat control. In 1938, Arnold F. Willatt invented the cold wave, the precursor to the modern perm. [12] It used no machines and no heat. The hair was wrapped on rods and a reduction lotion containing ammonium thioglycolate was applied. This chemical breaks open the disulfide ...
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.
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