Question

One of the following is used as a key ingredient in hair conditioning product

• A. Cetyl trimethyl ammonium chloride
• B. Benzyl cinnamate
• C. Ethanol
• D. Glycerine

Hint:

Look for quaternary ammonium compounds such as cetyl trimethyl ammonium chloride in hair conditioners—they help smoothen and detangle hair effectively.

Answer 1

The Correct Option is A

Cetyl trimethyl ammonium chloride is a key conditioning agent widely used in hair care products. It is a quaternary ammonium compound that serves as a cationic surfactant, helping to soften hair, reduce frizz, and improve manageability. It binds to the negatively charged hair strands and provides a conditioning effect. Other substances listed, like benzyl cinnamate (used in perfumes), ethanol (a solvent), and glycerine (a humectant), do not have the same targeted conditioning properties.