Which benefit is NOT provided by a leave-in conditioner?

Leave-in conditioners are designed to enhance the hair's manageability and appearance while providing moisture and nourishment. They typically help in maintaining moisture throughout the day, making hair easier to detangle, and often impart a shiny finish. These benefits arise from their formulation which includes conditioning agents that remain on the hair after application.

The option that discusses changing hair color does not align with the primary functions of a leave-in conditioner. Leave-in conditioners are not formulated to alter the hair's color; instead, they focus on care and maintenance. Color changes are usually achieved through hair dyes or color treatments specifically designed for that purpose, which is distinct from the conditioning and moisturizing properties of a leave-in product. Thus, it's clear that changing hair color is not a benefit provided by leave-in conditioners.