If I have sinus problem and eye itch which should I buy?

I read something about these two and they both claim to help with sinus problem.

Also come to my attention is air dehumidifier, which is the opposite of air humidifier, also claims to help with sinus problem. I saw a pamplet from hospital today claiming that dehumidifier can help starve dust mites and help with sinus problem.

So which should I buy?

same same take this also with a grain of salt...
im using air humidifier..to sleep..heheh lavender works wonders but most likely air purifier would work better...except its also more expensive.

ive got sinus issues too not so sure about that the dust mite thing but the eye itch usually its dust...

Your environment is important ...make sure its not dusty...cause dust will trigger the leaking nose n the itchy/puffy eyes. This is personal experience la..
the most crucial is to fix environment make sure its CLEAN, which is like make sure all the shelves clean weekly / best if keep minimal stuff around so the surface u have to clean less. if not clean till u pengsan..
then air the room dont leave it all stuffy...clean sheets...blanket...
clothes, towel all got to jaga also..if wardrobe all not like close n has dust will easily trigger..

weather/ temperature..suddenly hot then cold also nose like pipe bocor..

ive tried that but now trying another brand melaleuca..still cant decide which i like better
but does essential oil help with sinus..sleep yes la..

which ? i use lavendar for sleep which is good for sinus?