DIY Cilantro Room Spray That Actually Mixes
A cilantro room spray sounds like the easiest project there is: oil, liquid, bottle, shake. Then the first spritz lands on the curtains as a little oily bead, because essential oil does not dissolve in water. The good news is that one choice of base fixes most of it.
Cilantro Essential Oil
Our own Cilantro Essential Oil, in sizes from 0.5 oz to bulk.
From $13.99
Shop Now →Choosing a base
Water alone leaves the oil floating on top, so each spray delivers an uneven dose and the first sprays after shaking can be mostly undiluted oil. Water with a preservative is possible, but once water is in the bottle, microbes can grow in it. The FDA notes that cosmetic firms are legally responsible for the safety of what they sell and that no specific safety tests are required by law, so anyone selling a spray is taking on a formulation job. For a bottle made at home, keep batches small, use clean bottles and distilled water, store it away from food and discard it on a schedule you set in advance. A cosmetic chemist is the right person to ask about preservatives.
A high-proof alcohol base, such as perfumer's alcohol, holds the oil in solution much better and leaves less water for microbes. That is the route we would take for a small batch. It dries quickly, it is flammable, so read the supplier's safety data sheet and keep it away from flames, candles and cooking. We do not sell alcohol, and you will find it at a cosmetic or craft supplier.
If all you want is a green smell in the air, a diffuser needs no formulating at all. Our diffuser article covers that.
The arithmetic for a 100 ml bottle
A 1 ml measure of our oil weighs a little under a gram, since the Certificate of Analysis we publish for one batch lists a relative density of 0.86719. Counting about 20 drops per ml, a rough convention, here is a 100 ml alcohol spray:
| Oil share | Oil in 100 ml | Approximate drops |
|---|---|---|
| 0.25% | 0.25 ml | 5 |
| 0.5% | 0.5 ml | 10 |
| 1% | 1 ml | 20 |
We would begin at the top row. Cilantro oil is pungent in a way that takes over a room quickly, and you can always add another drop. Our skin guidance of 0.5% to 2% is written for skin, but anything that may land on skin or clothes you wear is worth keeping in mind.
A first bottle, step by step
- Start with 30 ml or 100 ml. That is plenty.
- Add the oil to the alcohol first, swirl, and let it settle before you judge it.
- Spray once into the middle of an empty room, step out, and come back after ten minutes. The nozzle always smells stronger than the room.
- Label the bottle with the date and proportions.
If the scent is too sharp, add more base rather than another oil. Layering a second scent over the first is how a bottle ends up smelling of neither. If you do add a partner, remember the percentage covers all the oils together. Lime, lemongrass, petitgrain, ginger and black pepper all sit well beside cilantro, and our blending shortlist has the details.
Making it feel finished
A spray bottle is half the experience. A fine-mist glass bottle gives a soft cloud rather than a squirt, and a little label with the date and the recipe makes the whole thing feel like something you made on purpose. Pick a bottle you will be happy to see on a shelf.
When you first test the mist, hold the bottle at arm's length and spray upward, letting it drift down. That way you get the scent without a wet spot on anything.
Where to spray, and where not to
- Into the air, not onto surfaces. Alcohol and oils can mark varnished wood, plastics and some stone, and the oil is pale yellow, so light fabric can show a spot. Try an inconspicuous corner first.
- Ventilated rooms. A spray puts a brief mist into the breathing zone. Diffuser emissions work shows that fragrance materials add to indoor air, though that study tested other oils in an ultrasonic diffuser and not a spray.
- Bedding and pet beds: we would skip them.
- Around pets, children and pregnancy: read the pets guide, the kids post and the pregnancy post, and ask a veterinarian, pediatrician or OB-GYN about your own situation.
We sell an aromatic cosmetic oil, so we do not describe it as cleaning or purifying the air. Store the finished spray in a cool, shaded spot, not a sunny windowsill or a hot car.
When it has had a day to settle
Make the spray, put it in the cool and dark for a day, and smell it again. The first minute out of the bottle often smells harsher than it does the next day, once everything has mingled. Give it a chance to settle before you judge it, and adjust the next batch by a single drop rather than several.
Made with a light hand, a cilantro room spray gives a room the smell of a freshly cut herb bunch for an afternoon, and that is reason enough.
Cilantro Essential Oil
Cilantro Essential Oil from our own shop, in sizes from 0.5 oz to bulk.
From $13.99
Shop Now →Sources & Further Reading
- FDA. FDA authority over cosmetics. fda.gov, how cosmetics are regulated
- Schwartz-Narbonne H et al., 2021. Volatile organic compound and particulate emissions from essential oil diffusers. Indoor Air. PubMed 33905580
