The device features a user-friendly three-level temperature control design, allowing users to freely switch temperatures based on fine and soft, normal, or coarse and curly hair types, precisely matching the styling needs of different hair textures. Low temperature gently protects color, medium temperature provides daily smoothing, and high temperature offers powerful styling; it can easily smooth and flyaways while avoiding high-temperature burns and hair damage, enabling even beginners to easily create a smooth and straight hairstyle.