The present invention is a bath which circulates and recycles a multiple mineral solution. The solution is released from the bathtub, filtered at the hair collector and the filtration device, sterilized at the electrolytic sterilizer, and returned to the tub. Non-metallic pipe is used along the circulation route. The electrolytic sterilizer employs several electrode panels which are placed perpendicular to the direction of flow of the solution. The filtration device features a rubber lining in the portions which come into contact with the solution, and has inside of it a dish onto which is lain filter sand. With the use of this invention, it becomes possible to repeatedly use and reuse a highly viscous solution containing multiple minerals as the recycling fluid, jams become infrequent, the filtration and reverse cleansing procedures become less time consuming, and the solution can be effectively sterilized.