There is no age limit. I was a baby when I was first time in sauna, so I would guess when the baby is old enough to be on the sandbox on the playground and as long as the heat in the sauna is not really high and someone is supervising the small child, it's okay. The time spent should be very limited as the stress put on the child's circulatory system is high.
You should see results after your first cleaning treatment.
You can use sauna everyday for about 60 minutes.
Yes, as long as you take care of hydration
You don't use sauna suit in the sauna.
Yes, but it is not adviced to take babies in the sauna.
It is safe to use sauna every day, as long as you don't do it for long periods at a time.
You should rather just go to a real sauna instead.
A dry sauna does not need a exhaust fan
A sauna.
You should search from the same place that sells sauna doors
Yes, as long as you keep yourself hydrated. If you feel uncomfortable, nausea or feel like blacking out, get out of sauna and drink water and eat something.
You shouldn't stay in the sauna for more than 60 minutes.