Dioleyl Tocopheryl Methylsilanol

AKA: 130986-04-8, 3, 4-Dihydro-2, 5, 7, 8-tetramethyl-6-[[methylbis(9-octadecen-1-yloxy)silyl]oxy]-2-(4, 8, 12-trimethyltridecyl)-2H-1-benzopyran
Synthetic
Antioxidant
Skin Conditioner
Barrier Support
Clean
OriginPlant-Derived
Silane, ((3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H-1-benzopyran-6-yl)oxy)methylbis (9-octadecenyloxy)-;
Formula
C66H122O4Si
Mol. Weight
1007.80
CAS #
130986-04-8
Form
Oil
Skin Types
●all-skin-types
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Yes
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Protecting
Helps rebuild and strengthen your skin barrier — the invisible shield that keeps moisture in and irritants out. Essential after over-exfoliating or harsh weather.
Nourishes & Protects
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed4 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
1 study / 1 not irritating (CIR 308)
Mixed Skin Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions slight (CIR 308)
Concentration Guide
Leave-on0.014%
Rinse-offNot reported
0%50%100%
CIR reported use · 2013 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR