Im a little surprised as to how well it works that is generating a good amount of hot steam and outputs more steam than a conventional sauna for the maximum one hour time limit per session. Setting up wasnt too difficult to figure out be prepared for the tent to jump out and unfold of its case like a jack-in-a-box Manual could have been better translated. You can use essential oils aromatherapy however the manual instructs to stir that in the water in the steamer chamber. I used a water soluble oil however it seemed to make the water evaporate a lot quicker and the unit cut out about 35 minutes in. Maybe I used too much. Pure oils may work better in the steamer however placing a water soluble oil in the white pill box is a much better way of doing it providing a much more intense and longer lasting steamy aroma within the tent. Im disappointed that I paid more for the sauna than what it is advertised at now.