NUTRI COLOR filters 500 100 ml NUTRI COLOR filters #500 100 ml is a professional hair color filter that is designed to be used to filter out unwanted impurities, such as minerals and other particles, in the hair coloring process. This filter is designed to protect your hair from damage and to ensure that colorants are evenly distributed throughout the hair. The filter is also designed to help ensure that the hair color is true to the desired shade and that there are no unwanted particles in the hair. The filter is easy to use and can be used in both professional and home hair coloring processes.