Glyceryl stearate is an ester of glycerin and stearic acid, forming a waxy substance that plays a crucial role in skincare formulations. Its primary function as an emollient helps to soften and smooth the skin by forming a protective layer on the surface, which reduces water loss and improves skin hydration [1]. This moisturizing effect is particularly beneficial for dry or mature skin types.

As an emulsifier, glyceryl stearate helps to blend oil and water-based ingredients, creating stable and homogeneous products [2]. This property is essential in formulating creams and lotions that maintain their consistency and effectiveness over time. The ingredient's ability to stabilize formulations also contributes to the extended shelf life of many skincare products.

Clinical studies have shown that glyceryl stearate can improve skin barrier function and enhance the delivery of other active ingredients [3]. Its molecular structure allows it to interact with both the lipid and aqueous components of the skin, making it an effective carrier for various skincare actives. Furthermore, glyceryl stearate has been found to have low irritation potential, making it suitable for use in products designed for sensitive skin [4].