California Cosmetology Practice Exam 2025 – Complete All-in-One Study Guide for Success!

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Question: 1 / 515

What is the primary purpose of a hair serum?

To add color to the hair

To smooth frizz and add shine

The primary purpose of a hair serum is to smooth frizz and add shine. Hair serums typically contain silicone or other ingredients that coat the hair, providing a protective layer that enhances shine and helps to control frizz. By creating a smooth surface on the hair strands, serums allow for better manageability and a polished appearance. This is particularly beneficial for those with curly or frizzy hair, as it helps to tame flyaways and create a sleeker look.

While serums can offer some level of protection against heat damage, that is not their main function. They do not add color, and while some products may claim to promote hair growth, that is not a universal characteristic of all serums. The focus of hair serums is specifically on achieving a smooth, shiny finish.

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To protect the hair from heat damage

To promote hair growth

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