Radico hair dyes are 100% natural and made exclusively from herbs. There are no synthetic ingredients and colours are free from ammonia, hydrogen peroxide, resorcinin and parabens. Radico Colour Me Organics colours are easy to apply and work for approximately 4 weeks, depending on hair texture and length. The colours are ideal for those who are sensitive to synthetic ingredients and chemicals and/or for those who think and act with care for their health. Very good coverage of white hair.