One of my friends, an otherwise healthy male in late twenties developed spring/pollen allergies on moving to upstate New York. He consulted a
doctor and the prescribed Allegra used to give him reasonable relief.
For "fun", I suggested he try the following:
1. Take two clean (sterilized ?) cotton buds.
2. Dip the cotton buds in olive oil.
3. Insert them into nostrils.
He tried my recommendation for a few days. His report is that they are
about as effective as Allegra. The only drawbacks were a slight discomfort,
slipping of buds into esophagus and an uncosmetic look. I suggested that
he at least go for this protection at night.
So it appears that the pollen get trapped by the oily cotton bud. One could experiment with an oily face mask. It seems safe, effective and keeps $$. Why not?
Anyone who wants to market this copyrighted idea, pl get in touch. I will quit my search for a day job and live off royalties.