Install a shower head filter. To filter out the iron chlorine and other impurities from the water you can invest in a showerhead filter that replaces them with healthy ph balanced potassium ions. Color Correction Blorange And Brass To Melted Ash Color Wash your hair with a purple shampoo to neutralize unwanted warm tones. Brass color hair . When hair with red and golden undertones is chemically lightened it can turn an unflattering brassy shade if you or the stylist did not lift the hair tone enough or if your natural hair color is a deep shade and you were trying to lighten it substantially in one process. As you get more gray hair it would be a good idea to wear a hat when you plan to spend significant time outside. If your hair is dark and you want to be blonde one method is to lighten your overall color to a medium or dark blonde and then add light highlights. Brassy hair is usually caused due to the iron and chlorine present in water you use to wash your hair. Method