It's essential that you follow the instructions at this stage. Leave the dye on your hair for the amount of time stated. You might be given a time range with minimum time and maximum time to leave the dye on. Make sure you follow this. The longer the dye is on, the more intense the color, usually. If you are covering greys, you may need to go with the maximum time. Be careful not to leave the dye on for longer than suggested, or you will dry out and damage the hair.

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