Trying to think what "reduit" could possibly be? It has to mean...

Trying to think what "reduit" could possibly be? It has to mean something. At first I was pronouncing it like "red-uit" (like conduit). But then I realised its more likely pronounced like "redo it" (im sure I was the last to realise that). So "redo" what? redo your hair. That does not make much sense to me. However, thinking about "do" as in "hairdo" suggests that "redo" means preserve/revitalise/restore/refresh a person's already styled hair. Not my area of experience, but don't many people spend a good deal on getting their hair styled a certain way and doesn't normal washing of hair kind of destroy it? Perhaps the new system allows one to get clean hair without using shampoo and water, thus preserving the salon styling. fwiw.