Ace the Rhode Island Barbering Test 2025 – Snip, Style, and Shine Your Way to Success!

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What is the primary ingredient in most hair relaxers?

Calcium hydroxide

Ammonium thioglycolate

Sodium hydroxide

Sodium hydroxide is the primary ingredient in many hair relaxers due to its strong alkaline properties, which are effective in breaking the disulfide bonds in the hair structure. These bonds are responsible for the hair's natural curl or wave, and by breaking them, sodium hydroxide allows the hair to be reshaped into a straighter form. This chemical process is known as "relaxing," and it makes it possible for individuals with curly or wavy hair to achieve a smoother, straighter appearance.

Sodium hydroxide acts rapidly, so it's crucial for professionals to monitor the application closely to avoid damage to the hair or scalp. It is favored for its efficacy in achieving long-lasting results. Other ingredients and compounds, while effective in their own right, do not serve as the primary active ingredient in the majority of hair relaxers.

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Glyceryl monostearate

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