Goldwell's Elumen treatment gives the possibility to color the hair without the use of acids that damage it, reducing its destruction and deterioration. The Elumen treatment is based on the principle of physics. The coloring particles penetrate deeply into the hair, and reconnect the porous points to each other through a basic principle of physics: a magnetic attraction brings the negatively charged Elumen molecules closer together to the positively charged Elumen particles of the hair, guaranteeing a perfect and reliable dye result. Moreover, the Elumen treatment guarantees a perfect coloring result, with excellent results in terms of brightness and contrast of the color obtained.