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Isostearyl Benzoate
AKA “UNII-PM49T02G54, Benzoic acid, isooctadecyl ester, Isooctadecanol, benzoate, PM49T02G54, FINSOLV SB, ISOOCTADECYL BENZOATE, DTXSID901019726, RefChem:149988, DTXCID201477640”
Emollient
Ingredient Facts
Isostearyl benzoate
AKA: UNII-PM49T02G54, Benzoic acid, Isooctadecyl ester, Isooctadecanol, PM49T02G54, FINSOLV SB, ISOOCTADECYL BENZOATE, DTXSID901019726, RefChem:149988, DTXCID201477640
Emollient · Emollient · EWG: 4
Plant-Derived
Emollient
Skin Conditioner
Hair Care
Not Clean
Benzoic acid, isooctadecyl ester
Formula
C25H42O2
Mol. Weight
374.60
CAS #
34364-24-4
Form
Liquid
See origin →
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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.
Locks In Moisture
Traditional Use
A synthetic ester developed for cosmetic use as a lightweight emollient and preservative enhancer. Designed to improve the feel and stability of skincare and color cosmetic products.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
RIFM fragrance ingredient safety assessment, ethyl benzoate, CAS Registry Number 93-89-0.
Api AM, Belsito D, Botelho D, Bruze M, Burton GA Jr et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2019
→
Update to RIFM fragrance ingredient safety assessment, isobutyl benzoate, CAS registry number 120-50-3.
Api AM, Bartlett A, Belsito D, Botelho D, Bruze M et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2024
→
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
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Safety Assessment of Alkyl Benzoates as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Safety Assessment of Benzyl Alcohol, Benzoic Acid and its Salts, and Benzyl Benzoate
Cosmetic Ingredient Review (CIR) Expert Panel
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)
→
Amyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Behenyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Benzyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Butyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Butyloctyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
C12-15 Alkyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
C16-17 Alkyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Calcium Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Denatonium Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Dimethicone PEG-8 Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Dimethicone PEG/PPG-20/23 Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethylhexyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hexyldecyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Isobutyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Isopropyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Isostearyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Lauryl/Myristyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Magnesium Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
MEA-Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Octyldodecyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Pentaerythrityl Tetrabehenate/Benzoate/Ethylhexanoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Pentaerythrityl Tetrabenzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Pentaerythrityl Tetraethylhexanoate/Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Poloxamer 105 Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Poloxamer 182 Dibenzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Potassium Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Sodium Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Stearyl Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Sucrose Benzoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
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
→
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
→
Preparation of functionalized graphene and ionic liquid co-doped polypyrrole solid phase microextraction coating for the detection of benzoates preser
Du J, Zhao F, Zeng B
Talanta, 2021
→
4-Hydroxybenzoic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Benzoic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Benzyl Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
C12-15 Alkyl Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Calcium Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Denatonium Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dimethicone PEG-8 Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dimethicone PEG/PPG-20/23 Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Ethyl Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Ethylhexyl Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Methyl Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Potassium Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Sodium Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Stearyl Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Sucrose Benzoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Methyl benzoate and nerolidol attract the cyclocephaline beetle Cyclocephala paraguayensis to trumpet flowers.
Favaris AP, Túler AC, Silva WD, Pec M, Rodrigues SR et al.
Die Naturwissenschaften, 2023
→
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
→
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
→
Scientific advice – children’s exposure to Methyl salicylate (methyl 2-hydroxybenzoate) - Revision of SCCS/1654/23
Scientific Committee on Consumer Safety (SCCS)
European Commission — SCCS
→
Scientific Advice on the safety of Diethylamino Hydroxybenzoyl Hexyl Benzoate - DHHB – S83 (CAS/EC No. 302776-68-7/443-860-6)
Scientific Committee on Consumer Safety (SCCS)
European Commission — SCCS
→
C12-15 alkyl benzoate: a new cosmetic allergen?
Werbrouck J, Lambrecht C, Goossens A
Contact dermatitis, 2015
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR