Sodium 3,4,5-Trimethoxycinnamate is primarily used in the cosmetic and personal care industry as a UV filter in sunscreen formulations. It helps protect the skin from harmful ultraviolet (UV) rays by absorbing UVB and UVA radiation, reducing the risk of sunburn and long-term skin damage. Its water-soluble nature allows for easy incorporation into various skincare products, including lotions, creams, and sprays. Additionally, it is valued for its stability under sunlight, ensuring prolonged efficacy in sun protection products. Beyond skincare, it is also explored in pharmaceutical research for its potential antioxidant properties, which may contribute to protecting cells from oxidative stress.