How best to disperse essential oils into your environment? Humans have been doing it for thousands of years:
And the LORD said unto Moses, Take unto thee sweet spices, stacte, and onycha, and galbanum; [these] sweet spices with pure frankincense: of each shall there be a like [weight]:
And thou shalt make it a perfume, a confection after the art of the apothecary, tempered together, pure [and] holy… Exodus 30:35-6
A heat source applied to a water-oil mix is the standard method. A well designed burner, made from pottery or brass, with the correct distance between the flame and the bowl so the solution neither boils nor fails to heat up sufficiently, does the job.
But flame-burners are a fire risk and the complex molecule strings which constitute essential oils and absolutes, become volatile at different temperatures. Consequently, when using an oil burner, the whole oil may not diffuse at the same moment.
The way round the problem is with an ultrasonic diffuser.
Instead of a heat source, an electric current is applied to a ceramic disk located at the base of the unit, making it vibrate. This causes the aromatic oil-water mix to vaporise in a heat-less reaction. Hence the whole oil is gradually ejected into the environment, as opposed to a partial, phased, release typical of a flame burner.
Havenessence aroma diffusers are robust, safe — they turn themselves off when empty — and pleasing to look at. They operate with ordinary tap water. They emit a soothing, barely audible, bubbling noise. They also disperse positive ions, producing an invigorating atmosphere similar to that experienced following a thunderstorm, or at the seaside during high surf.
Available online from havenessence or in person at Piccadilly Market in London’s West End.