You don't use sauna suit in the sauna.
Sauna suits are not meant to be worn in sauna. You are supposed to be naked in there.
No! Sauna suits are very dangerous in the sauna. They interfere with your body's ability to sweat. If you're wearing a vinyl suit, they give off huge quantities of toxic chemicals that can injure you and your sauna companions. Plus the sauna suit is an insulator, so it's going to slow down the effects of the sauna. The best use of a sauna is wearing as little as possible, so most of your skin is exposed to the heat and your body can sweat freely.
You should rather just go to a real sauna instead.
Sauna twin is a product that makes you sweat, but disgraces the name of sauna because it has nothing to do with actual sauna.
The sauna suit is used to aid in the removal of excess water weight in the body. There is no scientific evidence that suggests the neoprene used to make these suits causes cancer.
No you wear a bathing suit unless you're alone, then go naked.
I have been using sauna for 25 years almost weekly and I have no idea what a sauna suit is. Finns usually go naked in to the sauna. But the answer to your questions is "never" or "after a very long time". It requires you to be very obese to be even be able to lose 1.5 kg with sauna.The thing with sauna is that it causes you only to sweat, it is a way to cleanse yourself. There is no other magical weight burning effects. When a human body sweats too much, you get dehydrated and sudden dehydration is not healthy.
you can lose water.. which is heavy but as soon as ro rehydrate you gain the weight back.
You can buy a home sauna kit from http://www.saunafin.com/. You can also buy one from amazon.com, which has user reviews on the product.
Sweating on the top bench while throwing water on the stove.
2 pounds.