Many factors contribute to ending up with that brassy/orange color in your hair. Among them are the sun, clairifying shampoos, wrong color selection, and high chlorine concentrates in water. The most common is choosing a haircolor product that is more than three shades lighter than your natural color. Check my article on So, You Want to be a Blonde!! (this link will open a new browser) to see the best way to avoid such color mishaps. Another problem is not leaving the product on long enough. Many haircolors look as if they are turning dark during the processing time and if you remove them too soon, the product will not have enough time to do it's job. Always leave the product on the new growth for the maximum time.
Using Color by Robert Craig either to color your hair or to cover the brassy color you may now have is a great solution. Color by Robert Craig cannot lighten hair, therefore, will not pull any unwanted red into the hair. As a toner, Color by Robert Craig can remove an unwanted brassy result.