No, the bowl being wooden is semi-important, also a larger than usual air mattress and/or plastic sheets for the bed. It can get a bit messy.
And there is nothing solo about it.
Just Google "nuru massage".
FYI Thai Visa came through on my question. Tops only sells the really small bottles (40ml) and Dr.BJs wants ฿1,000 for 250ml bottles which is crazy prices since mail order from the distributor's web store if I lived there is only ฿250 for the same size. The best lead from TV is pharmacies in Soi Thaniya, Little Tokyo.