What is the main purpose of using a conditioner after shampooing?

Using a conditioner after shampooing serves primarily to nourish and soften the hair. Shampoo is designed to remove dirt, oil, and product buildup, but it may also strip the hair of its natural oils, leading to dryness and roughness. Conditioner helps to replenish moisture, smooth the hair cuticle, and enhance overall manageability. This process is critical for maintaining healthy hair, as it helps prevent tangles, reduces frizz, and can restore a desirable texture.

While adding shine is one benefit of conditioning, it is a secondary effect resulting from the primary function of softening and nourishing the hair. Thickening products certainly exist, but thickeners are typically specialized treatments rather than the purpose of a standard conditioner. Lastly, deep cleaning is not a function of conditioner; that role belongs solely to shampoo. Therefore, the best choice emphasizes the nourishing and softening qualities of conditioner, making it essential for hair care.