Undeceth-3
molecular structure · PubChem
AKA: Tomadol 1-3, Neodol 1-3, Genapol UD 030, Undeceth-3 [INCI], Triethylene glycol monoundecyl ether, Ethanol
Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Clean
Polyethylene Glycol (3) Undecyl Ether
Effective at 1.6%
Formula
C17H36O4
Mol. Weight
304.50
CAS #
88299-47-2
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.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks In Moisture
Traditional Use
A synthetic non-ionic surfactant developed in the mid-20th century through chemical ethoxylation. Created to improve emulsification and cleansing properties in modern cosmetic formulations.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.2%
3.0%
0%4%
Reported use
CIR reported use: 0.7-2 | 1-3 | 0.2-3
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR