Barber Practice State Board Practice Exam

What are chemical compounds that help retain moisture in hair known as?

1. Emollients

2. Surfactants

3. Humectants

4. Conditioners

The correct answer is: Humectants

Chemical compounds that help retain moisture in hair are known as humectants. Humectants are hygroscopic substances, meaning they attract water molecules from the environment or from deeper layers of the skin or hair. This property makes them particularly beneficial in hair care products, as they help maintain moisture levels, preventing dryness and brittleness in hair. Humectants are commonly used in various hair and skin care formulations to enhance hydration by drawing moisture into the hair shaft and holding it there. Ingredients such as glycerin, honey, and aloe vera are examples of humectants. While emollients also contribute to moisture retention by creating a soft barrier on the hair, their primary role is to smooth and soften rather than actively attract and retain moisture. Surfactants, on the other hand, are primarily involved in cleansing and may strip moisture, while conditioners typically offer a blend of benefits but do not specifically function to attract moisture in the same way that humectants do.