Alginic acid (also known as algin or alginate) is a natural polysaccharide product that is used as a food additive in the food industry. It is derived from brown seaweed and is used as a thickener and stabilizer in a variety of products, including ice cream, yogurt, processed cheese, salad dressings, and condiments. It is also used as a coating agent for food products such as fried foods. Alginic acid has a wide range of applications in the food industry, including as a stabilizer, thickener, and emulsifier. Alginic acid is also used in a variety of other industries, including pharmaceuticals, cosmetics, and printing. It is used as a thickener, stabilizer, and emulsifier in products such as lotions, creams, and other skin care products. It is also used as a binder in printing inks and in the production of paper and textiles.