Carmel Stearic Acid is a fatty acid derived from plant-based oils and fats. It is a white, waxy solid used in cosmetics as an emulsifying, surfactant, and thickening agent. It helps to keep the product's oil and water components blended together, creating a smooth and stable consistency. It also softens and lubricates the skin, making it an ideal ingredient in body creams, lotions, and lip balms.