In general, the application is simple. The solution flows through super.
A direct positive effect (better breathing for example) I can not confirm.
Now I hope, however, prevent colds. And should it again initiate a, I am sure that I am well prepared.
Operating instructions - top!
One point I will have to deduct because of the high price! The quality is fine - but is out of proportion to the price. We want about the cost of us now prefer not to entertain. ;-)