Sometimes do-it-yourself hair dye is difficult to predict and disasters do happen. Whether your red hair was a result of such a disaster or whether you simply don't think it suits you like you thought it would, it is possible to cover the red tones using ash hair dye. The colors in ash hair dye are based in violet and blue tones which counter orange and red tones. Ash colored hair dye is usually labeled with a "V" or a "B" to show that its base tones are violet or blue.
Purchase an ash-colored hair dye that is labeled with either a "V" or a "B." The violet or blue tones that make up the base of the ash hair dye will neutralize the red tones.
Read the instructions inside the box of hair dye. These involve pouring the hair color solution together with the developer solution and shaking it inside the bottle until it is mixed. Most hair colors do not require you to wet your hair prior to application, but double-check the directions inside the box and follow that specific procedure.
Put on the plastic gloves that come with the hair color kit. Squeeze a quarter-sized amount of dye into your palm and begin to massage it into your hair all the way down to its roots. Repeat this until all your hair is covered in dye.
Wait the amount of time suggested in the instructions. This is normally around 20 minutes, but it varies from brand to brand so make sure to read your specific instructions.
Rinse the color out of your hair and then shampoo and condition using the conditioner provided in the box of hair color. To view the results completely, dry your hair with a blow dryer to see if the red has neutralized as it should.