18-Hydroxyoctadecanoic acid finds applications in the production of specialty chemicals, particularly in the formulation of lubricants and surfactants. Its hydroxyl group allows it to act as a key intermediate in synthesizing esters, which are used in industrial lubricants to reduce friction and enhance performance. Additionally, it is utilized in the creation of emulsifiers and detergents, where its amphiphilic nature helps stabilize mixtures of oil and water. In the cosmetic industry, it is incorporated into skincare products for its moisturizing and conditioning properties. Its role in polymer chemistry is also notable, as it can be used to modify the properties of resins and coatings, improving their flexibility and adhesion.