A flat iron is a popular hair styling tool used to straighten hair. It consists of two heated plates that clamp together, allowing users to glide the device through sections of hair. The heat helps to break down the hydrogen bonds in the hair, resulting in a sleek and smooth appearance. Flat irons come in various sizes and materials, such as ceramic and titanium, which can affect their performance and heat distribution. To use a flat iron effectively, hair should be clean, dry, and free of tangles. Many people apply a heat protectant spray to minimize damage. The tool is often used in conjunction with other styling products, such as hair serum or hairspray, to achieve a polished look. Regular maintenance, like cleaning the plates, can prolong the life of the flat iron.