This character dyes his/her hair.

Hair coloring is the practice of changing the color of hair. Hair dyeing, which is an ancient art, involves treatment of the hair with various chemical compounds.

Note: Please do not use this trait just because the character has an unnatural hair color. Purple, blue, pink, green and other colors that are impossible without hair coloring in the real world, are used abundantly in visual novels. Thus only use this tag, if the VN explicitly states that this character colors his/her hair.