Health and Beauty Coloration L'Oréal Paris Préférence Permanent Coloring Préférence's translucent gel formula delivers color with radiant highlights and intensifies your hair's natural tones for up to 8 weeks. Discover the unique shades of Préférence hair color with light-reflecting pigments to achieve a radiant color full of reflections. The package contains final care, enriched with a UV filter and vitamin E to preserve shine. At the same time, it ensures up to 100% gray coverage.