Manic Panic Amplified Ultra Violet Cream Hair Dye. These wicked hair dyes last around 30% longer than the standard dyes, and only come in full on colours. As with the normal cream dye, these have best results on bleached or highlighted hair, but can give a subtle shade on natural hair.
Top tip: Always leave a bit in the pot to mix with your shampoo or conditioner to keep a strong colour.