TDLR Esthetician Practice Exam 2026 - Free Esthetician Practice Questions and Study Guide

The correct answer pertains to oil-in-water emulsions, which are commonly used in various personal care products such as skin cleansers, moisturizers, and body washes. These emulsions combine oil and water, allowing for effective hydration and cleansing properties that are gentle on the skin. The oil acts as a barrier that helps to retain moisture, while the water component aids in rinsing away dirt and impurities effectively.

This type of formulation is particularly favorable for everyday skincare products because it provides a lightweight feel and can be easily absorbed by the skin. Additionally, oil-in-water emulsions are versatile for different skin types, making them a popular choice in the formulation of cleansers and moisturizers designed to maintain the skin's hydration without leaving a greasy residue.

Water-in-oil emulsions, while also beneficial for moisturizing, tend to be thicker and may not be as effective in cleansing, which makes them less common in products like body washes. Gel-based products typically prioritize lightweight textures and may not have the same moisturizing properties. Alcohol-based products can be drying and are not usually recommended for regular use on the skin.