4-Butoxybenzoic acid is widely used in the synthesis of liquid crystal materials, which are essential components in displays for electronic devices such as TVs, smartphones, and monitors. Its structure contributes to the stability and alignment of liquid crystals, enhancing display performance. Additionally, it serves as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals, where it can be modified to create compounds with specific biological activities. In the cosmetic industry, it is utilized as a precursor for UV absorbers in sunscreen formulations, providing protection against harmful ultraviolet radiation. Its versatility in various chemical processes makes it a valuable compound in industrial applications.