Preference Infinia gives you up to 8 weeks of fade-defiant color. Featuring for the first time a Color Extender, which revives the look of day 1 color with each application for lustrous shine. It also provides up to 100% grey coverage. Give your hair show-stopping, intense color. Preference Infinia gives you up to 8 weeks of fade-defiant color. Featuring for the first time a Color Extender, which revives the look of day 1 color with each application for lustrous shine. It also provides up to 100% grey coverage. Give your hair show-stopping, intense color. Infinia gives you up to 8 weeks of fade-defiant colour. Featuring for the first time a Colour Extender, which revives the look of day 1 colour with each application for lustrous shine. It also provides up to 100% grey coverage. Give your hair show-stopping, intense colour. Each pack contains 1 bottle of Colorant Gel, 1 Developer Crème, 1 High Shine Conditioner, 1 Colour Extender, 1 instructions leaflet and pair of high quality gloves.