Mrs. Homegrown here:
I’ve had a bad cold for almost a week now. It’s gone through all the classic steps: the sore throat, then the snot factory, then the ghastly “productive cough” that keeps you awake at night, and on top of it all, the lost voice. Oh, the fun! I thought I was almost out of the woods, but then I seem to have hit a cul-de-sac involving the sinuses. Sinus trouble is a new malady for me–I’m just not prone to it–so it’s been a learning experience. My new best friend in this experience is my steaming pot-o-herbs.
Most folks know that you can inhale steam to ease congestion, whether that be in a hot shower, a steam room or by tenting a towel over a bowl of boiling water. What I’m going to talk about here is the bowl technique, tricked up by spiking the water with powerful healing herbs.
My inspiration came from the book by well-known herb expert, Stephen Harrod Buhner called Herbal Antibiotics: Natural Alternatives for Treating Drug-Resistant Bacteria
This is Buehner’s steam for upper-respiratory infections:
Get yourself a big cook pot–stainless, glass or enamel are recommended for working with herbs.
Fill it with a gallon of water
Into the cold water put:
2 oz. dried eucalyptus leaf
1 oz. dried sage
1 oz. dried juniper or crushed juniper berry
Bring to a rolling boil, then take off heat (I kept the pot covered to keep the good stuff in).
No need to transfer the liquid out of the pot into a bowl. Just put a trivet or folded towel on the table and put the pot on it. Lean over the steam with a towel over your head. Breath deep until the steam dies, or you can’t stand it any longer.
Don’t throw out the pot contents. Just put the lid back on when you’re done and heat it up when you need it again. If it seems to be losing potency, throw in another handful of herbs.
I used my pot for a night and a day before it began to look a little tired. It was also completely full of solid matter! At that point I dumped it out in the yard and started a fresh pot.
Alternative herbs:
You may not have all these ingredients, and that’s okay. You could get by with just one–e,g. only juniper. If you have access to fresh material instead of dried, that’s good, if not better. Don’t worry too much about quantity, just toss handfuls in the pot.
You can also use essential oils of the same herbs in the water if you have those on hand. Buhner says 30 drops of each–I think that’s overkill. I’d start with 2 drops of each and see how that works for you.
My first steam contained dried sage and juniper, and a few juniper berries. I had no dried eucalyptus. Eucalyptus has that nice, lung-opening menthol action which is hard to replace. Fortunately, I had some eucalyptus essential oil and would add one drop of it to the water each time I went into the tent. From now on I’m going to be sure to have eucalyptus essential oil on hand at all times.
On steam round two, I wanted to freshen the mix and had no more dried sage or juniper, so I added a big spray of fresh pine (baby cone and all) from the neighbor’s yard. Pine is considered a good substitute for juniper, followed by fir, cedar and spruce–in that order. You might not have a well stocked herb cupboard, but most neighborhoods and parks have evergreen trees. Just make sure you don’t pick the branches of the yew tree (the conifer with thimble-like red berries), because yews are toxic to consume. I don’t know if the steam would harm you, but I wouldn’t fool with it. I don’t know of any other toxic evergreen.
Remember, these particular herbs were chosen because of their strong antibacterial properties. You can also take steams with other healing herbs that may not have quite the power of these, but which have their own benefits. I’d recommend trying lavender, rosemary and mint as more gentle, but pleasing alternatives.
And failing all that, a plain water steam is better than nothing.
The results:
The idea here is that aromatics opened up my poor nose, sinuses and bronchial passages, loosening all that gunk so my body could send it on its way. Beyond that, I believe the antibacterial steam killed, or at least inhibited, the nasty bacteria it found on the way. I steamed intensively for 24 hours (every 2 to 4 hours, I think–whenever my head hurt I went back to the tent). Today I feel a lot better, so only did a steam in the morning.
When my sinus pain was at its worst, I’d take a washcloth in the tent with me, wet it in the herb water and use it as a compress over my sore face while I was breathing the steam.
The foremost effect of steaming for me was keeping sinus pain at bay–which it did very well. Ibuprofen did nothing. (And I don’t like OTC decongestants, in case you’re wondering) Steam took care of it just fine. The secondary effect is that my nose and chest have cleared up. The third effect is that my facial pores are now remarkably refined. 
Tonight I am pain free, snot free, feeling chipper and happily noshing on a cupcake Erik baked I post this.