USE NORMAL TAP WATER ONLY NO RO WATER MINERAL WATER OR PURIFIED WATER SHOULD BE USED This Facial Sauna/Steam inhalator produces steam vapours in the most natural way and helps in clearing blocked nose and helps in soothing soar throat Also it helps to get beautiful skin by cleansing skin impuritiea and dirt for the deep pores of the face thereby leading to a clear skin.PLS WASH THE TUMBLER WITH WATER BEFORE USING FOR THE FIRST TIME AS THE NEW PRODUCT MAY CONTAIN SOME PLASTIC SMELL