Long-lasting dye: This permanent blue hair dye gives intense colour thanks to its anti-fade formula; The built-in Vibrancy Serum activates colour at the core of each hair strand for maximum depth Easy application: Designed for use on medium brown to black hair, this vegan hair dye gives rich and long-lasting colour results as well as healthy-looking shine Full coverage: Get up to 100% grey coverage thanks to this nourishing permanent colour hair dye in a vibrant shade of Cosmic Blue; It is quick and easy to apply Colour and shine: With a built-in Vibrancy Serum for maximum depth and anti-fade effect, the nourishing dye gives vibrant hair colour and brilliant shine LIVE commitments: Featuring a vegan formula that is silicone- and alcohol-free, this permanent blue black hair dye also comes in a 100% recycled aluminium tube