Hair coloring is the process of changing the color of hair using various products. This can be done for aesthetic reasons, to cover gray hair, or to express personal style. There are different types of hair color, including permanent, semi-permanent, and temporary options, each with varying levels of longevity and application methods. The process typically involves applying a dye or color treatment to the hair, which can be done at home or in a salon by a professional hair stylist. Safety precautions, such as patch tests, are recommended to avoid allergic reactions. Proper aftercare is essential to maintain the vibrancy of the color.