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Propylene Glycol Stearate Self-Emulsifying
AKA “propylene glycol, 2-propanediol, propane-1, 2-Propylene glycol, 2-dihydroxypropane”
Ingredient
Ingredient Facts
Propylene glycol stearate self-emulsifying
AKA: 2-propanediol, Propane-1, 2-Propylene glycol, 2-dihydroxypropane
Ingredient · Emulsifying · EWG: 4
Plant-Derived
Emulsifier
Skin Conditioner
Plant Oil
Not Clean
Propylene Glycol Stearate Self-Emulsifying is a cosmetic ingredient. Assessed as safe by the CIR.
Effective at 1.0%
Formula
C3H8O2
Mol. Weight
76.09
CAS #
57-55-6
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Humectant
Solvent
Viscosity Controlling
Brightening
Anti-Inflammatory
Wound Healing
Traditional Use
Developed in the mid-20th century as a synthetic emulsifier combining propylene glycol with stearic acid. Used in cosmetics since the 1950s to stabilize oil-and-water mixtures and improve product texture.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
9.9e-05%
2.0%
0%14%
Effective Range
CIR reported use: 0.000099-2
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
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NTP toxicology and carcinogensis studies of dipropylene glycol (CAS No. 25265-71-8) in F344/N rats and B6C3F1 mice (drinking water studies).
National Toxicology Program technical report series, 2004
→
Effect of hydration on the structure of non aqueous ethyl cellulose/propylene glycol dicaprylate gels.
Bruno L, Kasapis S, Heng PW
International journal of biological macromolecules, 2012
→
Propylene glycol dermatitis.
J M Catanzaro, J G Smith
Journal of the American Academy of Dermatology, 1991
→
Propylene glycol dermatitis.
J M Catanzaro, J G Smith
Journal of the American Academy of Dermatology, 1991
→
Propylene glycol dermatitis.
J M Catanzaro, J G Smith
Journal of the American Academy of Dermatology, 1991
→
Addendum to the Final Report on the Safety Assessment of 2-Bromo-2-Nitropropane-1,3-Diol (JEPT 4(4) 47-61 1980)
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report of the Safety Assessment for 2-Bromo-2-Nitropropane-1,3-Diol
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Butylene Glycol, Hexylene Glycol, Ethoxydiglycol, and Dipropylene Glycol
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of PEG-25 Propylene Glycol Stearate, PEG-75 Propylene Glycol, PEG-120 Propylene Glycol Stearate, PEG-10 Propylene Glycol, PEG-8 Propylene Glycol Cocoate, and PEG-
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Propylene Glycol (PG) Dicaprylate, PG Dicaprylate/Dicaprate, PG Dicocoate, PG Dipelargonate, PG Isostearate, PG Laurate, PG Myristate, PG Oleate, PG Oleate SE,
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Propylene Glycol and Polypropylene Glycols
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Propylene Glycol Stearate and Propylene Glycol Stearate Self-Emulsifying
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report: Amended Safety Assessment of PEG Propylene Glycol Derivatives as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report: Safety Assessment of Propylene Glycol Esters as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
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Revised Tentative Report: Amended Safety Assessment of 2-Bromo-2-Nitropropane-1,3-Diol as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
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Safety Assessment of Propylene Glycol, Tripropylene Glycol and PPGs as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
2-Bromo-2-Nitropropane-1,3-Diol
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Almond Oil Propylene Glycol Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Apricot Kernel Oil Propylene Glycol Esters
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EU Cosmetic Ingredient Database (CosIng)
→
Avocado Oil Propylene Glycol Esters
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EU Cosmetic Ingredient Database (CosIng)
→
Olive Oil Propylene Glycol Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-10 Propylene Glycol
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-120 Propylene Glycol Stearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-25 Propylene Glycol Stearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-55 Propylene Glycol Oleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-6 Propylene Glycol Caprylate/Caprate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-75 Propylene Glycol Stearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-8 Propylene Glycol Cocoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Alginate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Behenate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Butyl Ether
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Capreth-4
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Caprylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Cocoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dicaprate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dicaproate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dicaprylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dicaprylate/Dicaprate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dicocoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Diethylhexanoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Diisononanoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Diisostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dilaurate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dioleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Dipelargonate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Distearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Diundecanoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Heptanoate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Isodeceth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Isodeceth-4
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Isostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Laurate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Laureth-6
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Linoleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Linolenate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Myristate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Oleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Oleate SE
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Oleth-5
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Soyate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Propylene Glycol Stearate
European Commission
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Propylene Glycol Stearate SE
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EU Cosmetic Ingredient Database (CosIng)
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Propylene Glycol/Sebacic Acid/Trimellitic Anhydride Copolymer
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Soybean Oil Propylene Glycol Esters
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Tripropylene Glycol
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EU Cosmetic Ingredient Database (CosIng)
→
2-Bromo-2-Nitropropane-1,3-Diol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dipropylene Glycol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
PEG-25 Propylene Glycol Stearate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
PEG-55 Propylene Glycol Oleate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
PEG-8 Propylene Glycol Cocoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
PROPANE-1
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Alginate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Butyl Ether
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Caprylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Cocoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Dicaprate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Dicaprylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Dicaprylate/Dicaprate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Diethylhexanoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Dipelargonate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Heptanoate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Isostearate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Laurate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Oleate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Oleate SE
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Propylene Glycol Stearate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Propylene Glycol Stearate SE
Environmental Working Group (EWG)
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→
Tripropylene Glycol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics.
Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2012
→
The Additive Influence of Propane-1,2-Diol on SDS Micellar Structure and Properties.
Gudelj M, Šurina P, Jurko L, Prkić A, Bošković P
Molecules (Basel, Switzerland), 2021
→
2-Bromo-2-nitropropane-1,3-diol
Health Canada
Health Canada Cosmetic Ingredient Hotlist
→
Urinary excretion of propylene glycol butyl ether (PGBE) and propylene glycol methyl ether (PGME) in healthy human participants and workers.
Hopf NB, Kaspar S, Berthet A, Hechon J, Pache J et al.
International journal of hygiene and environmental health, 2026
→
Propylene Glycol.
Jacob SE, Scheman A, McGowan MA
Dermatitis : contact, atopic, occupational, drug, 2018
→
Propylene Glycol.
Jacob SE, Scheman A, McGowan MA
Dermatitis : contact, atopic, occupational, drug, 2018
→
Propylene Glycol.
Jacob SE, Scheman A, McGowan MA
Dermatitis : contact, atopic, occupational, drug, 2018
→
Propylene Glycol.
Jacob SE, Scheman A, McGowan MA
Dermatitis : contact, atopic, occupational, drug, 2018
→
Propylene Glycol.
Jacob SE, Scheman A, McGowan MA
Dermatitis : contact, atopic, occupational, drug, 2018
→
Propylene Glycol.
Jacob SE, Scheman A, McGowan MA
Dermatitis : contact, atopic, occupational, drug, 2018
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
Final report on the safety assessment of PEG-25 propylene glycol stearate, PEG-75 propylene glycol stearate, PEG-120 propylene glycol stearate, PEG-10
Johnson W Jr, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2001
→
The Inhibitory Effect of Propylene Glycol Alginate Sodium Sulfate on Fibroblast Growth Factor 2-Mediated Angiogenesis and Invasion in Murine Melanoma
Ma H, Qiu P, Xu H, Xu X, Xin M et al.
Marine drugs, 2019
→
Propylene glycol, skin sensitisation and allergic contact dermatitis: A scientific and regulatory conundrum.
Pemberton MA, Kimber I
Regulatory toxicology and pharmacology : RTP, 2023
→
Kitty Litter Dermatitis from-Bromo-2-Nitropropane-1,3-Diol.
Sullenbarger JW, Hensley B, Travers JB
Skinmed, 2017
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR