Alginates are natural polysaccharides derived from the cell walls of brown seaweeds. They are commonly used in food, pharmaceuticals, and cosmetics due to their ability to form gels and thicken liquids. Alginates can absorb water and swell, making them useful as stabilizers and emulsifiers in various products. In addition to their industrial applications, alginates are also used in medical settings, particularly in wound dressings and drug delivery systems. Their biocompatibility and ability to create a moist environment promote healing, making them valuable in healthcare.