Manic Panic Blue Panther 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 instructions For 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.