Database/Skin Conditioning/Azulene
100% petroleum · ISO 16128

Is Azulene natural?

No. Parent azulene is made by chemical synthesis from petrochemical cyclopentadiene and pyridine-type precursors; it is not isolated from chamomile, which yields chamazulene instead.

INCI nameAzulene
CAS275-51-4
FormulaC10H8 · 128.17 Da
FunctionSkin Conditioning · Soothing
FeedstockSynthesised from cyclopentadiene and pyridine (Ziegler-Hafner) or indane-based…

How we scored it

C10H8 128.2: bicyclic hydrocarbon synthesised from petrochemical ring precursors; no natural-origin fragment. 0 / 128.2 = 0.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Synthesised from cyclopentadiene and pyridine (Ziegler-Hafner) or indane-based routes. Blue chamomile or guaiazulene oils contain alkylated azulenes and are separate ingredients, not this compound.

In plain English

A deep blue hydrocarbon related to the blue compounds in chamomile oil, listed for skin soothing. Plain azulene is made in a laboratory from petrochemical starting materials rather than extracted from plants.

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Structure

2D structure of Azulene

azulene

PubChem CID 9231 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Azulene. PubChem CID 9231. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3AZULENE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4AZULENE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=AZULENE