Be sure to follow these directions:
Do NOT do nasya right after using the neti pot.
Do NOT do it right after bathing. Wait at least an hour.
DO NOT do it when you have a sinus infection, a cold, or when there is inflammation or a lot of mucus present in the nose.
Before applying the oil, gently blow your nose.
Lie down on your bed, with your head off the edge. Apply 2 to 5 drops of nasya oil to each nostril, and GENTLY sniff it up, alternating nostrils.
Spend another minute or so lying there to let the oil get deep into your sinuses.
A little bit of oil typically gets into your throat. This is not a problem, just part of the process. When you get up you might have to scrape your throat and spit it out. You might need to blow your nose a few times. The practice can be clearing, so this is to be expected.
The effect will be that you will suffer less airborne allergies, and will have less colds, and it will make your head feel better in general.
Nasya oil is available from many companies who sell Ayurvedic herbal products.