Not thick...reapply often
I usually use Ayer Gel Nadal Spray when I travel on planes.  It's the best way to fight getting sick from traveling.  Keeping your nostrils moist and breathing through your nose is the key to fighting airborne germs.  I used this nasal spray on my roundtrip flight to Canada.  This spray works well but I had to keep reapplying it.  The Ayer Gel spray seems to coat my nostrils better but this spray works well for daily usage.  I will continue using the thicker gel Nadal spray on planes but I well use this at work and home because it does moisturize my nasal passages when my nose doesn't completely dry out which happens on flights.
Rating: 4 stars