Milady Esthetics State Board Practice Test 2026 - Free Esthetics Exam Practice Questions and Study Guide

Glycerin is widely recognized for its excellent moisturizing properties. It is a humectant, meaning that it has the ability to attract moisture from the environment and draw it into the skin. This helps to keep the skin hydrated and can prevent dryness by maintaining the skin's moisture balance. Glycerin not only enhances the skin's barrier function but also improves the overall texture and appearance by making it feel softer and more supple. It can be used in various skin types, including sensitive and dehydrated skin, making it a popular choice in many skincare formulations.

While the other ingredients serve important roles in skincare, they do not primarily focus on moisturizing. Salicylic acid is often used for its exfoliating properties and ability to treat acne, niacinamide is known for its beneficial effects on skin tone and texture, and tea tree oil is recognized for its antibacterial and anti-inflammatory benefits.