MANIC PANIC After Midnight Hair Amplified Semi Permanent Hair Dye is our deepest, darkest navy blue hair color with slight green undertones. This color can add dark blue highlights to virgin, unbleached hair, but for best results, we recommend lightening hair to a very light level 9 blonde or lighter and toning hair that has yellow tones before use to avoid undesired hues. The Amplified line of semi-permanent hair color dye lasts 30% longer than the MANIC PANIC High Voltage Classic hair dye collection, leaving your lovely locks with a vibrant color that lasts 6 to 8 weeks. Choose from a range of more than 20 colors that offer vivid, bold results for all hair types. All MANIC PANIC hair dyes are free from gluten, ammonia, PPD, resorcinol and phthalates, packed in a Vegan formula. Every MANIC PANIC hair dye is PETA accredited, made in the USA and tested on celebrities - not animals. For best results, pre-lightened hair to a level 9 or 10 using MANIC PANIC Flash Lightning Bleach Kits. Then, brighten your mane within minutes with this blue hair color for men and women from MANIC PANIC. Hair dye results do vary, though, based on base color, porosity and hair type. Avoid using on hair with more than 10% grey coverage and read instructions included with the products.