First Defense Nasal Screens are a new revolutionary lightweight, non inserted, non-intrusive, almost non-visible, hypoallergenic, a self-adhesive screen that covers the nasal passage and filters the air we breathe. As a certified testing chart shows FDNS can make a significant difference even at sub-micron levels of .1µm with 77% efficiencies and over 92% at 1 µm and over 99% at 10 µm.
- All-natural Lightweight, no need to insert
- Latex-free, hypo-allergenic, non-visible
- Helps alleviate respiratory suffering by comfortably filtering inhaled air and removing airborne germs, allergens and/or noxious particles
- Greatly reduces inhalation
- Each set of Nasal Screens are good for 24hrs.