It revives the look of day 1 colour & shine for show-stopping hair colour. With 40 shades to choose from, theres something for everyone! Whether its platinum, blonde, brown or black hair youre after, Preference has a shade for you. For a look that's on trend. Go for an ombr or bronde! 1. Shampoo and towel-dry your hair. 2. Apply evenly a small quantity of Colour Extender all over your hair and massage thoroughly. 3. Leave in for 5 to 10 minutes maximum. Then rinse thoroughly with warm water.