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Stearyl Benzoate
AKA “Octadecyl benzoate, Benzoic acid, octadecyl ester, 10578-34-4, stearyl ester, 7HD51EXK79, EINECS 234-169-9, DTXSID1065130, RefChem:566149, STEARYL BENZOATE [INCI]”
Emollient
Ingredient Facts
Stearyl benzoate
AKA: Octadecyl benzoate, Benzoic acid, Octadecyl ester, 10578-34-4, Stearyl ester, 7HD51EXK79, EINECS 234-169-9, DTXSID1065130, RefChem:566149, STEARYL BENZOATE [INCI]
Emollient · Emollient · EWG: 1
Plant-Derived
Emollient
Solvent
Skin Conditioner
Clean
Octadecyl benzoate
Formula
C25H42O2
Mol. Weight
374.60
CAS #
10578-34-4
Form
Liquid
See origin →
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.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks In Moisture
Traditional Use
Created as a synthetic ester in modern cosmetics. Designed to provide emollient and preservative-like sensory benefits in skincare formulations.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
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Benzyl Alcohol, Benzoic Acid, Sodium Benzoate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Benzyl Alcohol, Benzoic Acid, and Sodium Benzoate
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Safety Assessment of Benzyl Alcohol, Benzoic Acid and its Salts, and Benzyl Benzoate
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International Journal of Toxicology
→
4-Hydroxybenzoic acid rescues multisystemic disease and perinatal lethality in a mouse model of mitochondrial disease.
Corral-Sarasa J, Martínez-Gálvez JM, González-García P, Wendling O, Jiménez-Sánchez L et al.
Cell reports, 2024
→
4-Hydroxybenzoic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogenated Castor Oil Stearyl Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
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Isostearyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
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Stearyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
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Benzoic acid and its derivatives as naturally occurring compounds in foods and as additives: Uses, exposure, and controversy.
Del Olmo A, Calzada J, Nuñez M
Critical reviews in food science and nutrition, 2017
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Benzoic acid and its derivatives as naturally occurring compounds in foods and as additives: Uses, exposure, and controversy.
Del Olmo A, Calzada J, Nuñez M
Critical reviews in food science and nutrition, 2017
→
Benzoic acid and its derivatives as naturally occurring compounds in foods and as additives: Uses, exposure, and controversy.
Del Olmo A, Calzada J, Nuñez M
Critical reviews in food science and nutrition, 2017
→
4-Hydroxybenzoic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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EWG Skin Deep Cosmetics Database
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Stearyl Benzoate
Environmental Working Group (EWG)
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→
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International journal of toxicology, 2017
→
Safety Assessment of Benzyl Alcohol, Benzoic Acid and its...
Wilbur Johnson, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler + 5 more
International journal of toxicology, 2017
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR