So, we’ve got our herbs infusing, our mixtures are empowered, and everything’s been sitting for however long we need it to — maybe a week, maybe two, maybe an entire moon cycle.
Next, we’ve got to filter them, figure out where and how to keep them, and use them.
Filtering the Oils
Filtering the oils takes the solid plant matter out of them, leaving just the clear oil behind. Naturally, how effective that is depends on what filter media you use. Filters with larger mesh, like cheesecloth, will let your oils filter much more quickly, but will allow some small particles to pass through. Finer filters, like coffee filters, filter very slowly and produce a clearer oil.
Really, the choice of filter medium is up to you. If you’re not worried about having floaty bits in your oil, pick a coarser filter. If you’ve got time to kill and want a clear oil, pick a finer one.
I usually set up the filter in an empty jar, and hold it in place with a rubber band. You’ll want to avoid stretching the filter too tightly across the top — it should dip in the middle, to properly hold the oil and herbs without spilling. Think of it like a coffee filter.
I give the jar of herbs and oil one last good shake to wake it up and keep the herbs from staying in a thick layer on the bottom. After a few minutes to allow it to settle, I begin pouring the oil into the filter. Depending on the size of your filter and jar, you may be able to pour the entire batch of oil out at once. Otherwise, pour a bit, wait for it to filter through, then pour some more.
You can wring the remnants of oil out of the herbs you’re left with, or not. The choice is up to you. The remaining oily herbs can be incorporated into salves, or simply composted.
At this point, I usually add any essential oils I’m working with. They are aromatic compounds, so they lose potency with time, heat, and light. I find that adding them at the end of the process helps them stay stronger, longer — especially if I’m using warmth or sunlight to aid the infusion process.
Storing Magical Oil
You might want to keep your oils in sunlight for vibrational purposes, but, as I mentioned previously, light and heat degrade many of the compounds in oil. Your best bet is to store them the way you’d store any essential or cooking oil — in a cool, dark area. (Especially if you’re using an oil with a shelf life of a few months, versus a few years.)
Colored bottles help preserve oil by blocking ultraviolet light:
- Amber glass provides the best protection against UV and visible light.
- Cobalt blue protects against visible light, but not UV.
- Green glass protects against visible light, but not UV.
- Clear glass doesn’t protect against UV or visible light.
In short, amber glass is the best option for storing large batches of oil. If you want to use clear glass for aesthetic reasons, only use it for small bottles that will be used up fairly quickly. If you don’t have much choice in what kind of bottle you use, opt for the largest wrap-around label you can. An opaque label will block out UV and visible light.
Even if you have a carrier oil with a long shelf life, some degradation can happen. Worry not; there are two ways you can help protect the integrity of your oils, without negatively impacting their magical properties.
Have you ever heard any say that rosemary can be substituted for any herb in a spell? Not everyone agrees with this, but rosemary does have an impressively long and varied list of properties. It’s a good thing, too, because it can help preserve your oil. Rosemary oil is a natural antioxidant, and you only need about .2-.5% to help keep a mixture fresh. (It smells really good, too.)
If rosemary really won’t suit the mixture of herbs you’re working with, you can go with vitamin E oil. Either get the liquid form, or pop open a couple of vitamin E capsules from the drug store. Vitamin E is another antioxidant, and it won’t harm the scent or consistency of your oils.
As with anything else, avoid these if you have an allergy.
Using Your Oils
How you use your oil depends on which ingredients you chose. Virtually any oil can be used to dress a candle, sachet, or poppet, as an offering, or what have you, but not everything is suitable for anointing. Some essential oils, like lemongrass, can be sensitizing. Citrus has a reputation for phototoxicity — definitely don’t use it before going out in the sun!
If you plan to add essential oils to an oil for anointing, be mindful of your dilution. Most guides for oil dilution assume that the end product is a massage oil, lotion, or other body care product, so they tend to be a bit conservative — you definitely want a pretty low level of essential oils if you’re planning on regularly applying something to your entire body! For oils intended for anointing, which is generally done rarely and sparingly, a perfume dilution is fine. Body care formulations typically stay around 2% or less, while perfume may be as high as 5%. Mountain Rose Herbs has a very helpful dilution calculator that can help you make sure your blends aren’t too strong.
That’s it! While buying your magical supplies is definitely helpful in a pinch, nothing really compares to making your own. With some time and quality ingredients, you can create magical oils that are effective, powerful, and personalized for your needs.