L\'Oreal Paris Preference Infinia 7.23 Rich Rose Gold Hair Dye gives you up to 8 weeks of fade defying colour. L\'Oreal Paris Preference Infinia 7. 23 Rich Rose Gold Hair Dye gives you a caramel blonde shade for up to 8 weeks of fade-defiant colour. This product features the Colour Extender, which revives the look of day 1 colour with each application for lustrous shine. It also pr s up to 100% grey coverage. Each pack contains 1 bottle of Colorant Gel, 1 Developer Creme, 1 High Shine Conditioner, 1 Colour Extender, 1 instructions leaflet and pair of high-quality gloves.