Clarity noticeably came back in 1/2 hour.
Within a half hour of wearing this, I noticed an incredible difference. Yes, of course I was skeptical about reading mixed reviews but wanted to try it.  Within the first 1/2 hour I felt a literal physical clearing of the head.  Seriously.  Like when you wake up first thing in the morning...things get clearer and clearer.  That's how I can describe it.  I take it off only when I shower or swim because I don't want to ruin it.  There are no side effects whatsoever, not in the slightest.  I have mine for 2 months now and wouldn't dream about stopping to wear it.  The soft tie that comes with it to wear around your neck is super.  I even added my St. Benedict medal on the same line.  Together, I feel invincible!  Seriously though, the other negative reviews, I think they may be honestly mistaken about something else because this product is excellent.  Only negative is that it was a bit too pricey for my budget, but worth the investment.
Rating: 5 stars