My experiences with a similar products is that such rubber bands are not designed to be held over your naked head.
If you use them like that, those rubber bands will extend due the constant stretch and eventually will not be usable.
Additionally such of use will also cause poor blood circulation flow to your head.
All such torches are designed to be attached over a safety helmet.
If you can accept to get married by such a helmet? then move forward.
The worst that it can happen to you, is to look like I do, when I am working inside in a construction site or factory.