Monosodium glutamate (MSG) hydrate, the monosodium salt of L-glutamic acid, is widely used as a flavor enhancer in the food industry, imparting umami taste to dishes. It is commonly added to soups, snacks, sauces, and processed foods to improve palatability. In the pharmaceutical sector, it serves as a nutrient supplement, aiding in metabolic processes and supporting brain function. Additionally, it is utilized in microbial culture media to promote the growth of certain microorganisms in biotechnological applications. Its role in cosmetics includes acting as a moisturizing agent and hair conditioner, enhancing product efficacy.