Natural bristles are hair fibers sourced from animals, commonly from pigs, sables, or goats. These bristles are often used in brushes for painting, makeup, and cleaning due to their ability to hold paint or product effectively and provide a smooth application. They are valued for their durability and flexibility, making them suitable for various tasks. Unlike synthetic bristles, natural bristles are biodegradable and can offer a different texture and finish. They are often preferred by artists and professionals for their performance and the unique qualities they bring to different applications, enhancing the overall experience and results.