Clairol is a hair colour formulated with Colour-Blend Technology™ for multi-dimensional results. Each shade has tones and highlights built into it for professional-looking colour. It is available in 40 shades, with each shade containing at least three tones to ensure the hair colour mimics the tones closest to those found in natural, uncoloured hair. It will provide 100 per cent grey coverage from root to tip while simultaneously nourishing the hair. Lasts up to eight weeks.