Essential Oils Quality
In home conditions it is practically impossible to control quality of the oil. And the oil of unknown origin might be of poor or no quality. It can be even dangerous so it’s best to get the oils from safe and reliable places like herbal shops or chemists.
A label and its contents are extremely important.
Essential oils branded as natural or 100% natural must have the botanical name on their labels. Some expensive oils are branded natural but sold with botanical oils or alcohol.
Labeling some products as "aroma oils", "fragrance" or "perfumed" oils is often confusing and overused by dishonest merchants.
In such cases it often means a poor quality product, half –synthetic or synthetic that can be used only in a diffuser to scent the room and not to inhale, bath or for body care.
As a rule, high quality oils are expensive.
Purely natural essential oils can sometimes vary in their quality.
This might depend on the time of harvesting the herb, the way it was stored before the distillation or the climate.