Google May, 2016 | Emilys Oils-Essential Oils

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Monoterpene aldehydes
Posted on: May 19, 2016

Essential oils with significant concentrations of aldehydes are anti-inflammatory and anti-spasmodic and sedating. Aldehydes are usually irritating to the skin, especially when oxidized.  Taking advantage of these attributes safely means dilution is necessary.

Two very common monoterpene aldehydes are citronellal and citral, they both have a lemon like smell that is very identifiable and apparent in any blend.

Citronellol in Eucalyptus citriodora and Citronella, and citral in Lemongrass and Lemon Verbena. These essential oils are best used in very low concentrations (1%) when blended for topical use. Consider using other essential oils in the blend that are very well tolerated and a skin nourishing base material. If you are using these essential oils in a diffusor, high concentrations reduces the sedating effect. Consider using a very small amount in the blend or using a diffusor with a timer.

Concretes and absolutes
Posted on: May 17, 2016

Most concretes and absolutes are florals. Champa and Jasmine and Rose, things like that. Solvent extraction produces a material that smells very close to the real flower and that makes these concretes and absolutes popular with perfumers. When done well, there is very little if any solvent or ethanol remaining in the material.

Plant material is mashed with a solvent. Plant material is filtered and solvent is driven off, producing a semi-soft waxy material we call the concrete.

Treating the concrete further with ethanol makes the waxes congeal and drop out and the separated liquid is the absolute.

Some plant molecules don’t evaporate very well or at low temps and they do’t end up in steam distilled essential oils. Molecules only need to dissolve to end up in the concrete and absolute.