South Dakota Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

Question: 1 / 400

What is the primary purpose of using a hair serum?

To add volume

To protect from heat

To hydrate the scalp

To reduce frizz

The primary purpose of using a hair serum is to reduce frizz. Hair serums are typically silicone-based products that create a protective layer around the hair strands. This layer helps to smooth down the cuticle, the outermost layer of the hair, which can become raised and lead to frizz, especially in humid conditions. By sealing the cuticle, hair serums can make the hair appear shinier and more polished while also controlling flyaways and improving overall manageability.

While some hair serums may have added benefits, such as providing heat protection or hydrating properties, their main function is centered around smoothing the hair and reducing frizz. This is particularly beneficial for individuals with curly or wavy hair types who often struggle with frizz and want a sleeker appearance.

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