MANIC PANIC Natural Hair Dye Blue Panther is a rich, deep black hair dye with cool blue/purple undertones. For best results, use this dark, velvety shade on pre-lightened hair! Please n ote that since Blue Panther is so pigmented, it should work well on most hair levels but due to its blue undertone, it can clash with very orangey base tones on virgin, unbleached hair!