Azulene
AKA “Cyclopentacycloheptene, Azunamic, Bicyclo[5.3.0]decapentaene, azulen, Bicyclo(5.3.0)decapentaene, Bicyclo(5.3.0)-1, 9-decapentaene, Bicyclo(5.3.0)-deca-2
Synthetic
Ingredient Facts
Azulene
AKA: Cyclopentacycloheptene, Azunamic, Bicyclo[5.3.0]decapentaene, Bicyclo(5.3.0)decapentaene, Bicyclo(5.3.0)-1, 9-decapentaene, Bicyclo(5.3.0)-deca-2
Synthetic · Soothing · EWG: 3
Synthetic
Soothing
Skin Conditioner
Synthetic
Clean
A naturally-inspired compound that calms irritated skin and helps maintain a healthy complexion by soothing redness and sensitivity.
Formula
C10H8
Mol. Weight
128.17
CAS #
275-51-4
Form
Powder
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Soothing
Calms redness, irritation, and inflammation. Your skin's chill pill — great for sensitive, reactive, or post-procedure skin.
Soothes Skin
Traditional Use
Isolated from chamomile and wormwood essential oils in the early 20th century; historically used in traditional European herbalism for inflammation. Its blue color and soothing properties made it popular in cosmetics starting in the 1950s.
Skin Types
all-skin-types
Best For
Irritation
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
3
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-3
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR