Dye
To dream that you or someone is dyeing cloths and garments suggests that you are expressing a desire to project a new identity. Depending on the color of the dye, it could be positive or negative.
To dream that you are dyeing your hair indicates that you are trying to project a new persona. If you are dyeing your hair to a darker color, then it suggests that you want to be more serious. If you are dyeing your hair to a lighter color, then you are looking to be more livelier.