What is the primary function of a conditioner in hair care?

The primary function of a conditioner in hair care is to provide added moisture. Conditioners are formulated to hydrate hair, smooth the cuticle, and improve the overall texture and appearance. This hydration is essential for maintaining healthy hair, especially in individuals with dry, damaged, or chemically treated hair.

Conditioners work by replenishing moisture and preventing water loss, making hair softer, more manageable, and easier to style. They often contain ingredients like emollients and humectants that attract moisture to the hair shaft and seal it in, which is crucial for maintaining the hair's health and preventing issues like breakage and frizz.

While other products may cleanse the hair, create volume, or enhance color vibrancy, the key benefit of a conditioner is its ability to hydrate and nourish, making option B the most accurate representation of its primary function.