Dicetyl Thiodipropionate
AKA “Propanoic acid, dihexadecyl ester, UNII-62P18A9Q8N, 3'-Thiobispropanoic acid, DIHEXADECYL THIODIPROPIONATE, EINECS 221-941-5”
Synthetic
Ingredient Facts
Dicetyl thiodipropionate
AKA: Propanoic acid, Dihexadecyl ester, UNII-62P18A9Q8N, 3'-Thiobispropanoic acid, DIHEXADECYL THIODIPROPIONATE, EINECS 221-941-5
Synthetic · Antioxidant · EWG: 4
Synthetic
Antioxidant
Skin Conditioner
Synthetic
Clean
A protective antioxidant that helps prevent product breakdown and keeps formulas fresh and effective over time.
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.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR