1. Washing off
One very good technique that professionals do to lighten a too dark shade is to wash it off. The best detergent to use is dishwashing liquid. Wash your hair immediately at least three times when you find that the hair color is too dark. The dishwashing liquid will lighten the hair color in a flash to give you a softer hue. It is not advisable to recolor your hair because you are not satisfied with the color since it will make the effect worse. The only thing you could do is to wait at least four weeks before you color your hair once again. This is one good thing about this pre-mixed hair colors – the color change is gradual so you do not end up with a drastic change from your original hair color.