This dye lends your hair bright and vibrant colour for up to 6 weeks and is ideal for all hair types (even damaged hair) thanks to its ammonia, paraben and PPD-free formulation. The pack of 4 is perfect for frequent dye users or those who always want to have their favourite shade in stock. Furthermore, the hair colour is cruelty-free (has not been tested on animals) as well as gentle and nourishing when dying. The multi pack of 4 pots is sure to work wonders on your hair, no matter how long or thick it is. Please note: results may vary depending on hair type, base colour and hair texture. This hair dye is not suitable for hair with more than 10% grey content. In order to achieve a result similar to the photo on the packaging, your hair should be brightened up to level 9-10. Always perform a strand test 48 hours before use. Please read and refer to the instructions on the packaging (English language not guaranteed).