ARCTIC FOX Hair Color is a semi-permanent direct dye, meaning it only deposits color; no developer needed! All semi-permanent colors will fade, but not all fade equally. ARCTIC FOX is formulated to fade within the original color spectrum, so as the color fades, the shades will continue to be the same gorgeous hue. This also means that your base color is very important to your end result. For the most vivid, long-lasting results, apply to pre-lightened hair.