Abstract: The Rejuvenator adds the contents of a container of an admixture to the flow of shower water or bath and hand wash supplies for a specific application. The Rejuvenator 1 is attached to the outlet of a shower unit or mixer shower by screwing the female cone gland 2 onto that outlet. Then a shower hose can be attached to the male gland 3. The container of an admixture 6 (seen in FIG. 3) can be attached by screwing 7 into the rejuvenator 1, at 5. Turning the selector wheel 4 can regulate the amount of admixture used. NB: The Rejuvenator will have to be fitted by a qualified plumber to the hand and bath water supplies and water supply for toilet cisterns. (For hand and bath water, Rejuvenator could be manufactured with mixer tap attached).