Which of the following is used in beauty parlours for hair setting?
Correct answer: C. Sulphur
- A. Silicon
- B. Chlorine
- C. Sulphur
- D. Phosphorus
Explanation
Sulfur-containing compounds are used in hair treatments because they affect the disulfide bonds in keratin, helping reshape and set hair. Silicon, chlorine and phosphorus are not the usual answer for this traditional hair-setting use.
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