Simple Tree's hair colors are made of 100% natural ingredients that gently color your hair. These natural hair colors not only colour your hair, the ayurvedic herbs mixed in the colours condition the hair and scalp. However what is missing from these hair colours are Ammonia, Metallic Salts, PPD, Harsh burning and blistering chemicals and all other toxins. These colours are perfect for those who are tired of the damage caused by chemical colours on their hair, and those who are looking to dye their premature grey hair permanently and naturally. The best part is that these hair colours dye your hair permanently and after that you only have to do a touch-up on new hair. How? Because these hair colours make a perfect and natural bond with your hair shaft.