Red hair tint is a type of hair dye that is used to give a reddish hue to the hair. It is usually used to enhance the natural color of the hair or to create a more vibrant look. TIT is an acronym for Temporary Intense Tint, which is a type of red hair tint that is designed to last for a few weeks before fading away. This type of hair dye is ideal for those who want to experiment with different hair colors without making a permanent commitment.