Don't forget I've said this before and I'll say it again, there are many and varied causes of this affliction. A few being:-

Sinus
Middle/Inner Ear Cattarh
Neck Injury
Loud noise exposure over 80 decibels
Virus

Not all cases are permanent or too long a term, but rather than just masking the symptom, i.e an organisation advising a masker(I see that as a cop out) find the cause so it can be treated, depending on what the cause is. It's marvelous the advancements in recent years, even for noise induced tinnitus with it's hair cell replacement etc.

Don't be taken in by some of these charlatans, they are simply just BAD! about this powder cures etc