What is the definition of a humectant?

A humectant is defined as a substance that helps to retain and preserve moisture. These agents are commonly used in skincare and haircare products to attract water from the environment or from the deeper layers of the skin or hair, thereby preventing moisture loss. This property makes humectants particularly valuable for maintaining hydration and promoting the health of hair and skin.

In the context of haircare, products containing humectants can help keep hair hydrated, making it look shinier and more manageable. They play a crucial role in ensuring that hair maintains its moisture balance, which is vital for overall hair health, especially in dry climates or conditions where moisture might be easily lost.

Understanding the role of humectants can guide individuals in choosing the right products for their specific needs, such as combating dryness or improving hair texture. This foundational knowledge is essential for anyone studying cosmetology, as it applies directly to product selection and client care.