Utah Esthetician State Board Practice Exam

What is the function of preservatives in cosmetic products?

1. To enhance fragrance

2. To hold products together

3. To add color

4. To increase viscosity

The correct answer is: To hold products together

Preservatives in cosmetic products play a critical role in maintaining the safety and efficacy of the formulation by preventing microbial growth, spoilage, and degradation. The correct choice related to their function emphasizes how preservatives help to keep products stable and extend their shelf life, ensuring that they remain effective and safe for consumer use over time. Preservatives inhibit the growth of bacteria, mold, and yeast, which can contaminate products once they are opened and used. By holding products together and providing a protective barrier against these microorganisms, preservatives play an essential role in the overall integrity of the product. This function is fundamental for any cosmetic that may be exposed to water, as water can create an ideal environment for microorganisms to thrive. While enhancing fragrance, adding color, or increasing viscosity are important aspects of cosmetic formulations, they are not the primary function of preservatives. These functions relate to the aesthetics or texture of the product rather than its preservation and safety. Therefore, understanding the role of preservatives is crucial for anyone working in the esthetics field, ensuring that they choose safe and effective products for their clients.