Laureth-9
molecular structure · PubChem
AKA: Polidocanol, 3055-99-0, Nonaethylene glycol monododecyl ether, Asclera, Aethoxy-sklerol, Nonaethylene glycol monolauryl ether, VARITHENA, 2-[2-[2-[2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol, PEG-9 lauryl ether, Macrogol 9 lauryl ether
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from lauryl alcohol, typically produced from coconut or palm oil through synthetic chemistry. Synthesized through ethoxylation, where ethylene oxide is added to lauryl alcohol to create the polyethylene glycol ether.
3,6,9,12,15,18,21,24,27-Nonaoxanonatriacontan-1-ol
Solubility miscible
Formula
C30H62O10
Mol. Weight
582.80
CAS #
3055-99-0, 9002-92-0, 68439-50-9
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Mixes Oil & Water
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
2 studies / 2 not sensitizing / plus 2 case reports (CIR 581)
Not an Eye Irritant
1 study / 1 not irritating (CIR 581)
Skin Irritant in Testing
4 studies / 4 irritating / reactions slight to moderate / plus 2 case reports (CIR 581)
Concentration Guide
Leave-on0.0003–1%
Rinse-off0.006–2%
0%50%100%
Reg. limit 3%
CIR reported use · report published 2012
EU limit: 3% in leave-on, 4% in rinse-off products. Regulation (EU) No 483/2013 (CosIng Annex III/257).
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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