Louisiana Cosmetology Board Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The main function of conditioner is to hydrate and smooth hair after shampooing. After cleansing the hair with shampoo, which removes dirt, oil, and product buildup, conditioner helps to restore moisture and nutrients that may have been stripped away during the washing process. Using a conditioner can reduce frizz, improve manageability, and enhance the overall texture of the hair, making it feel softer and look shinier.

Conditioners often contain ingredients designed to smooth the hair cuticle, which can help seal in moisture and create a protective barrier against environmental factors. This hydration is essential for maintaining healthy hair, especially in those with dry, curly, or chemically-treated hair.

In contrast, other options serve different purposes. Cleansing the scalp is primarily the role of shampoo, while adding volume generally involves specific styling products designed to lift the roots or create texture. Protecting hair from heat damage is a function of heat protectant sprays or serums, which are formulated to shield hair from thermal tools like blow dryers and flat irons.