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A relaxer is a type of lotion or cream generally used by people with tight curls or very curly hair which makes hair easier to straighten by chemically "relaxing" the natural curls. The active agent is usually a strong alkali , although some formulations are based on ammonium thioglycolate or formaldehyde .
January 24, 1995 an investigator with FDA's San Francisco district office went to Addressing and Mailing to inspect the firm and found more than 8,000 cases of the Rio hair relaxers, worth about $500,000 in retail value. FDA notified the State of Nevada Division of Health, which, in turn, embargoed the products, thus preventing their sale.
Perming hair with the sodium thioglycolate method takes only 15–30 minutes of exposure to the sodium thioglycolate solution before a neutralizer solution is applied to bring the pH back to normal and re-bond the hair. The permanent relaxer straightens the hair instead of curling it. The same chemical methods can be used for this, but the hair ...
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Getting a relaxer at a young age was quite a common thing, but as is the case with many permanent chemical processes, relaxers can make hair more susceptible to damage and breakage, as it damages ...
A solution containing ammonium thioglycolate contains a lot of free ammonia, which swells hair, rendering it permeable.The thioglycolic acid in the perm solution reduces the disulfide cystine bonds in the cortex of the hair. [2]
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