Red Seal Hairstylist Practice Exam

What does the term 'hygroscopy' mean in relation to hair?

1. The ability of hair to withstand heat damage

2. The ability of hair to absorb moisture from the environment

3. The ability of hair to resist chemical treatments

4. The ability of hair to maintain its texture and shape

The correct answer is: The ability of hair to absorb moisture from the environment

The term 'hygroscopy' refers to the ability of a substance to absorb moisture from the surrounding environment. In the context of hair, it indicates how hair is capable of taking in water vapor present in the air. This property is essential for maintaining the moisture balance in hair, which can affect its overall health, texture, and appearance. When hair is hygroscopic, it can adjust to humidity levels, helping to retain moisture and flexibility. This aspect is crucial in hair care, as properly moisturized hair is less prone to breakage and damage, resulting in better manageability and shine. Understanding hygroscopy is important for hairstylists when recommending products and treatments that enhance or protect moisture levels in clients' hair.