To look more like the characters they are portraying, cosplayers might also engage in various forms of body modification. Cosplayers may opt to change their skin color utilizing make-up to more simulate the race of the character they are adopting. Contact lenses that match the color of their character's eyes are a common form of this, especially in the case of characters with particularly unique eyes as part of their trademark look. Contact lenses that make the pupil look enlarged to visually echo the large eyes of anime and manga characters are also used. Another form of body modification in which cosplayers engage is to copy any tattoos or special markings their character might have. Temporary tattoos, permanent marker, body paint, and in rare cases, permanent tattoos, are all methods used by cosplayers to achieve the desired look. Permanent and temporary hair dye, spray-in hair coloring, and specialized extreme styling products are all used by some cosplayers whose natural hair can achieve the desired hairstyle. It is also commonplace for them to shave off their eyebrows to gain a more accurate look.