Organic Essential Oil Guide: How to Choose

An essential oil is the concentrated aromatic compounds of a plant's flowers, leaves, peel or resin. The same 'lavender' can smell very different by origin, variety and growing method. Here is how to choose a quality organic oil, and the two ranges we carry.

Four things to check

Botanical name and origin
Sourcing: certified organic or wildcrafted
Single origin and chemotype
Dark glass bottle

Oshadhi — single-origin oils

Oshadhi is a German essential oil house with one of the widest ranges in the world, mostly certified organic or wildcrafted, in cobalt-blue glass. Global Organic Group, which runs Kosmic Alchemy, is Oshadhi's distributor in Japan. Compare chemotypes side by side: Basil sweet (linalool) ¥2,200 and Basil (methyl chavicol) ¥2,420, or Thyme mild (linalool) ¥3,850. Also Tea Tree m.a., Spike Lavender, Rose Bulgaria and Neroli. See the Oshadhi collection.

Kosmic Alchemy single oils

Everyday scents from a 3 mL trial size up: Lavender Maillette, Rosemary Highland, Rose Geranium, Himalayan Fir and Palo Santo. Browse all essential oils.

FAQ

How do I choose a quality organic essential oil?

Check for the botanical name and origin, certified organic or wildcrafted sourcing, single-origin material, and dark glass bottles. The same plant can smell different by origin and chemotype.

What is a chemotype?

Plants of the same species can produce different main aroma compounds depending on where they grow. Thyme and basil, for example, come in linalool-rich types that smell noticeably softer.

Who is Oshadhi?

Oshadhi is a German essential oil house known for single-origin oils and a very wide range, mostly certified organic or wildcrafted. Global Organic Group, which runs Kosmic Alchemy, is Oshadhi's distributor in Japan (Oshadhi Japan).

Any safety tips?

Do not apply undiluted to skin or take internally. Keep out of reach of children and pets, and store tightly closed away from heat and sunlight.

Prices include Japanese consumption tax (November 2026).