Manic Panic Voodoo Blue semi-permanent hair color creams are ready-to-use and gradually fades after each shampoo. They are "Tested on celebrities, not on animals" so vegan and also peroxide-free, Paraben-free, Gluten-free, Ammonia-free, Resorcinol-free, PPD-free, Phthalate-free. Made in the USA.• Ready to use• Do not mix with peroxide• Each application lasts up to 6 weeks• Color fades gradually after each shampoo• Resealable jar for longer use,• Comes with instructionsFor the most vibrant results:• We recommend lightening hair to very light level 9 blonde or lighter with Manic Panic Flash Lightning Bleaching Kit before use.