Ethyl 3,4-dihydroxybenzoate is widely used in the cosmetic and skincare industry as an antioxidant and preservative. It helps to prevent the degradation of products by inhibiting the oxidation process, thereby extending their shelf life. Its ability to scavenge free radicals also makes it valuable in anti-aging skincare products, where it helps to protect the skin from environmental damage. In pharmaceuticals, it is utilized for its antimicrobial and anti-inflammatory properties, making it effective in formulations aimed at preventing infections and reducing inflammation. Additionally, it is employed in the food industry as a preservative to maintain the freshness and quality of various food products. It is also used as an intermediate in the synthesis of other chemicals in laboratory research settings.