Triisostearin

AKA: 26942-95-0, 1, 2, 3-Propanetriyl triisooctadecanoate, Glycerin triisostearate, Isostearic acid triglyceride, Glycerol triisostearate, Salacos 3318, GLYCERYL TRIISOSTEARATE, Isooctadecanoic acid, 3-propanetriyl ester, CRODAMOL GTIS
Plant-Derived
Skin Conditioner
Clean
OriginDerived from animal tallow, palm-nut oil, and coconut oil through selective extraction of triglycerides. Produced by hydrogenation and fractionation of these natural oil triglycerides to isolate stearic acid esters.
1,2,3-Propanetriyl triisooctadecanoate
Formula
C57H110O6
Mol. Weight
891.50
CAS #
26942-95-0
Form
Powder
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.
Viscosity Controlling
Locks in moisture
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
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
2 studies / 2 not irritating (CIR 742)
Not Phototoxic
Animal test found no phototoxicity in the CIR safety assessment (CIR 742)
Mixed Skin Irritation Results
3 studies / 2 irritating / 1 mixed / reactions slight to mild (CIR 316 and 742)
Concentration Guide
Leave-on0.3–45%
Rinse-off0.05–30%
0%50%100%
CIR reported use · 2017 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR