Silicic acid hydrate, also known as precipitated silica, is widely used in the production of silica gel, a common desiccant for controlling humidity in packaging and storage. It serves as a support material in the manufacturing of catalysts to enhance efficiency. In pharmaceuticals, it acts as an excipient for stabilizing and delivering active ingredients. It is applied in water treatment to remove impurities and heavy metals. In cosmetics, it improves skin hydration and texture. Additionally, it is used in the food industry as an anti-caking agent and thickener, in agriculture as a soil amendment to improve nutrient uptake, and in construction materials to increase durability and environmental resistance.