Hair tinting is a cosmetic process that involves applying a semi-permanent or permanent color to the hair. This technique is used to enhance or change the natural hair color, covering gray hair or adding highlights. The tint typically contains color pigments that penetrate the hair shaft, resulting in a vibrant hue. The process usually begins with a patch test to check for allergic reactions. After that, the hair is sectioned, and the tint is applied evenly. After a specified time, the tint is rinsed out, leaving the hair with a refreshed and vibrant appearance. Regular maintenance is often needed to keep the color looking its best.