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 colours in ash hair dye are based in violet and blue tones which counter orange and red tones. Ash coloured hair dye is usually labelled with a "V" or a "B" to show that its base tones are violet or blue.
Purchase an ash-coloured hair dye that is labelled with either a "V" or a "B." The violet or blue tones that make up the base of the ash hair dye will neutralise the red tones.
Read the instructions inside the box of hair dye. These involve pouring the hair colour solution together with the developer solution and shaking it inside the bottle until it is mixed. Most hair colours 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 colour 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 colour out of your hair and then shampoo and condition using the conditioner provided in the box of hair colour. To view the results completely, dry your hair with a blow dryer to see if the red has neutralised as it should.
Ash hair colour should only be used to "get red out," not to cover naturally red, orange or auburn hair. Combining ash hair colour with natural warm colours can turn hair a greenish tint.