Dicetyl Thiodipropionate
AKA “Propanoic acid, 3, 3'-thiobis-, dihexadecyl ester, 3287-12-5, 62P18A9Q8N, UNII-62P18A9Q8N, DTXSID7062956, 3'-Thiobispropanoic acid, DIHEXADECYL THIODIPROPIONATE, EINECS 221-941-5, 1, 1'-dihexadecyl ester
Antioxidant
Ingredient Facts
Dicetyl thiodipropionate
AKA: Propanoic acid, 3, 3'-thiobis-, Dihexadecyl ester, 3287-12-5, 62P18A9Q8N, UNII-62P18A9Q8N, DTXSID7062956, 3'-Thiobispropanoic acid, DIHEXADECYL THIODIPROPIONATE, EINECS 221-941-5, 1, 1'-dihexadecyl ester
Antioxidant · Antioxidant · EWG: 4
Synthetic
Antioxidant
Not Clean
Dihexadecyl 3,3'-thiobispropionate
Formula
C38H74O4S
Mol. Weight
627.10
CAS #
3287-12-5
Form
Liquid
See origin →
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Neutralizes Free Radicals
Traditional Use
Synthetic antioxidant developed in the 20th century to prevent rancidity in cosmetic oils and emollients. Created to extend shelf life of products containing unstable natural ingredients.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Reviewed by CIR
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR