Oklahoma Cosmetology Board Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

Recommending a hair serum to create a protective barrier against environmental damage is essential for maintaining the health and appearance of hair. Hair serums often contain ingredients that coat the hair strands, shielding them from factors such as UV rays, pollution, and humidity. This protective barrier helps to prevent loss of moisture and reduces the risk of damage, keeping hair smoother, shinier, and more manageable.

While enhancing hair color, straightening hair permanently, or bulking up thin hair may be goals for some clients, these do not encompass the primary benefits that serums typically provide. Hair serums are not designed for coloring, chemically straightening, or volumizing the hair in a permanent manner. Their main function is to protect and maintain the hair’s integrity, which is crucial for healthy hair care practices.