Glycerin is a humectant, meaning it attracts and retains moisture from the air, helping to keep the skin hydrated. Glycerin creates a protective barrier on the skin, preventing moisture loss and contributing to a smoother and softer complexion. This versatile ingredient is suitable for various skin types, including sensitive skin, and is commonly found in a wide range of skincare products such as cleansers, moisturizers, and serums. Its ability to enhance skin hydration and promote a healthy skin barrier makes glycerin a staple in many skincare routines.