Put your small plastic chair at the center of your bathtub or shower stall.
Hang your beach towels at the top of the stall or shower curtain to create a barrier that will keep as much of the steam as possible in the stall area.
Prepare your portable steamer by filling the reservoir with water and sliding the hose into the stall, placing the end of the hose underneath your chair. Turn on your steamer and let it run for approximately 10 minutes, allowing the steam to build.
Get into your chair and enjoy your sauna.