Celebrities love to play with their hair, whether it's with hair dye, extensions, or bright, bold wigs. Kristen Stewart loves ...

Dip-dye hair for the win! You can opt for a bright pink no matter your hair color, but fuchsia looks particularly awesome when paired with brown or black hair, as we see on Jessie J here.

Most hair dye preparations contain para-phenylenediamine, which can be highly allergenic. Is there a safe alternative?