Sodium alginate is a natural polysaccharide derived from brown seaweed, widely used in the food industry as a thickening, gelling, and stabilizing agent. It is commonly found in products like ice cream, yogurt, salad dressings, and dairy to improve texture, prevent separation, and enhance mouthfeel. In the pharmaceutical industry, it is utilized in wound dressings, drug delivery systems, tablets, and liquid formulations due to its biocompatibility, gel-forming ability, and controlled release properties. In cosmetics and personal care, it serves as a thickener and moisturizer in creams, gels, and lotions to improve skin conditioning. Sodium alginate also plays a role in the textile industry as a thickener for printing pastes to create patterns and enhance dye adhesion. Additionally, it is used in dentistry for making dental impressions and in biotechnology for cell encapsulation and tissue engineering. Its versatility, natural origin, and safety make it a valuable ingredient across various fields.