murphyTrehalose Isostearate Esters
molecular structure · PubChem
Plant-Derived
Emollient
Skin Conditioner
Not Clean
OriginDerived from trehalose (a natural disaccharide) and isostearic acid (a branched fatty acid). Produced through esterification, chemically bonding the two compounds via a condensation reaction.
Trehalose Isostearate Esters is the product obtained by the esterification of isostearic acid and Trehalose
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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.
Locks In Moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️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 (CIR report on the ingredient group)
CIR report statement covering this group of ingredients / not tested individually (CIR 721)
Concentration Guide
Leave-on0.5%
Rinse-offNot reported
0%50%100%
CIR reported use · report published 2021
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR