murphyPEG-20 Sorbitan Oleate
molecular structure · PubChem
AKA: Polysorbate 80, Tween 80, Sorbitan Oleate PEG-20
Synthetic
Cleanser
Emulsifier
Clean
OriginDerived from sorbitan (a sorbitol derivative) and oleic acid, typically sourced from plant oils like olive or safflower. Synthesized through esterification of sorbitan with oleic acid, followed by polyethylene glycol (PEG) attachment.
Sorbitan, mono-9-octadecenoate, poly(oxy-1,2-ethanediyl) derivs., (Z)- (20 mol EO average molar ratio)
CAS #
9005-65-6
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
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.
Surfactant Cleansing
Surfactant Emulsifying
Moisturizing
Strengthens Barrier
Removes dirt and impurities
Lifts away dirt and oil
Mixes oil and water
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2015
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR