A bottle is one of the most common types of packaging in cosmetics, widely used for liquid products such as toners, serums, lotions, and cleansers. The bottle is typically made from glass, plastic, or other high-quality materials, with designs such as pumps or spray nozzles for precise dispensing. Bottles offer strong sealing and anti-contamination properties, effectively extending the product's shelf life while being convenient for storage and travel. It is an essential part of modern cosmetic packaging.