California State Board Barber Practice Exam 2026 – Complete Prep Guide

Water is typically the main ingredient in hair conditioner, serving as the foundational carrier for other ingredients. The presence of water allows the conditioner to be easily spread and absorbed by the hair, delivering moisture and nutrients effectively. This hydrating quality is essential for restoring balance to the hair, especially after it has been cleaned and stripped of natural oils during washing.

While other ingredients like proteins and silicones play important roles in enhancing the benefits of a conditioner—such as adding strength or shine—water remains the predominant component that not only makes up a significant portion of the product but also offers the primary moisturizing effect that is essential for healthy hair.