Loreal Paris Prodigy Permanent Oil Hair Color 1 Obsidian Kit comes with new micro-oil technology which perfectly diffuses a blend of color reflects into the heart of the fiber, revealing subtle, natural-looking color. The color particles are diffused from root to tip, reflecting light to reveal an extraordinary natural-looking color to the hair. The product improves hair texture and radiant shine and the technology leaves each strand feeling smoother and cared for. Hair looks enhanced: improved visible condition, with healthy radiant shine. Which works on strand by strand up to 100% grey coverage that always looks natural.