Pennsylvania Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which ingredient is commonly known for its moisturizing properties in hair products?

Alcohol

Shea Butter

Glycerin

Glycerin is well-known for its moisturizing properties and is widely used in hair products due to its ability to attract and retain moisture in the hair. As a humectant, glycerin draws water from the air into the hair strands, helping to keep them hydrated and preventing dryness. This moisture retention is essential for maintaining healthy hair, reducing frizz, and enhancing overall hair texture and shine.

In contrast, while shea butter is also recognized for its moisturizing qualities, it is typically used more for its nourishing and emollient properties rather than its water-attracting abilities. Alcohol can often have drying effects on hair, depending on the type, and sulfates are primarily cleansing agents that can strip moisture from hair rather than provide it. Thus, glycerin stands out as the ingredient specifically associated with moisture retention in hair care formulations.

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Sulfate

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