Glycerine soap is a translucent, smooth-textured soap that contains glycerin, a natural humectant derived from vegetable oils. Known for its moisturizing properties, glycerine soap helps to hydrate the skin while gently cleansing it. It's often clear or lightly colored and may be scented or unscented, making it suitable for sensitive skin types. This type of soap is popular for its ability to retain moisture, leaving the skin feeling soft and smooth after use.