Kadus Professional Demi-Permanent Hair Color Developer when used with Kadus Professional Demi-Permanent Hair Color provides shiny, natural looking hair color. It's the perfect solution for all clients whether they're looking to enhance their color or cover their first signs of gray hair.What it does: The Extra Rich Crème Formula with waxes and lipids provides up to 50% gray coverage as well as 50% more shine. For best results, mix with Kadus Demi-Permanent Hair Color and use for full-head application, color balancing in lengths and ends or toning after lightening. The multi-dimensional shine and intense color lasts up to 24 washes. Prestige fragrance system provides a pleasant experience indulging senses with notes of exotic blossoms and fresh fruit.