Glycerin monostearate, commonly known as GMS, is a white, odorless, and sweet-tasting powder with the chemical formula C21H42O4. It serves as an emulsifier in various industries, comprising fatty acid, glycerol, and stearic acid, preventing the separation of material particles due to its hydrophilic and hydrophobic properties. Glycerin monostearate finds applications in the preparation of lotions, sun creams, hair care products, as well as serving as additives in the food industry for products like ice cream, cream, and edible oils. Additionally, it is used as a lubricant and plasticizer in the plastic industry.