Permanent hair coloring that delivers high performance without the use of ammonia or oxidants. Featuring highly refined and acidic pigments, this product interacts with hair on a physical level, maintaining an acidic pH of 2.5. Elumen is the signature hair color by Goldwell, designed to illuminate hair from the inside out, resulting in vibrant and exceptional effects: Brilliant and radiant color outcomes. Remarkable longevity. Hair appears glossy and healthy. The vibrancy of the color persists even after 10 washes.