Finding the right color for your hair can be tricky. Hair colors come in different tones, such as cool, neutral or warm. Each color has its own base shade as well. Depending on the tone and base shade, the resulting overall color will have different underlying tones. In other words, not all brown hair colors are created equal. Auburn is a reddish brown color, and the trick to finding a brown hair color with no auburn in it is choosing a brown with the right tone and base shade.
Determine which shade of brown you want--for example, light, medium or dark brown.
Choose from a couple of options in terms of how to find a brown with no auburn tone. You could select an ash brown color. Ash has a green base to it, which will cancel out any red tones like those present in auburn. Many hair color product brands have color charts on their websites, so look at those first to find an ash color. Or go to your local beauty supply store and tell them you're looking for an ash brown.
Go for the next option if an ash, which is classified as a cool color, is not exactly what you're searching for. Other hair colors are neutral or warm, and you could select a neutral brown instead. The box of hair color should indicate if it is a neutral base color, sometimes denoted with an "N." If you need help, consult the folks at your local beauty supply store, and they can help you find a neutral brown.
Pick up an unred hair color additive product, to be on the safe side. If you choose a neutral brown, there is a risk that an auburn tone could still appear when you color your hair. The additive will eliminate any red tones from coming through. You simply add it to your hair color product before applying to your hair. Follow the full instructions on the product's package.