Welcome to Healthcare Magic forum.
I believe you must have see this message on the belt.
WARNING! This product contains a chemical known to the State of California
to cause birth defects or other reproductive harm.
So, yes it does pose a health risk.
If you are planning to use this belt to reduce/trim your waist line.
My opinion is that it will not do the job.
Because you must understand that there no such thing as spot fat reduction methods. Unless and until you specially cut the fat out of those areas which is done by liposuction
only. Even liposuction is not a permanent. Fat will get deposited again those areas at the shortest possible time.
You must understand that fat is distributed all throughout the body. In order to reduce the fat at the waist line you have to reduce your total body fat, which can be done only through strict diet and exercise regimen.
If you still insists on trying to reduce your waist line with waist trimmer belt, I suggest you buy a waist trimmer belt which is made of different material.
Hope I have answered your questions.