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Potassium Myristate
AKA “Potassium tetradecanoate, Nonsoul MK 1, Myristic acid, potassium salt, Potassium n-tetradecanoate, Caswell No. 696A, Tetradecanoic acid, EINECS 236-550-5, EPA Pesticide Chemical Code 079022, UNII-O38QT2542V”
Surfactant
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Ingredient Facts
Potassium myristate
AKA: Potassium tetradecanoate, Nonsoul MK 1, Myristic acid, Potassium salt, Potassium n-tetradecanoate, Caswell No. 696A, Tetradecanoic acid, EINECS 236-550-5, EPA Pesticide Chemical Code 079022, UNII-O38QT2542V
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Emulsifier
Plant Oil
Clean
Potassium myristate
Formula
C14H27KO2
Mol. Weight
266.46
CAS #
13429-27-1
Form
Liquid
State
Liquid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Cleansing Surfactant
Emulsifier
Removes Impurities
Mixes Oil & Water
Traditional Use
Potassium salt of myristic acid (a fatty acid), developed as a mild surfactant and emulsifier in modern cosmetic formulations.
Skin Types
●all-skin-types
Best For
General
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
Myristic acid reduces skin inflammation and nociception.
Alonso-Castro AJ, Serrano-Vega R, Pérez Gutiérrez S, Isiordia-Espinoza MA, Solorio-Alvarado CR
Journal of food biochemistry, 2022
→
Final Report of the Amended Safety Assessment of Myristic Acid and its Salts and Esters as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Oleic Acid, Lauric Acid, Palmitic Acid, Myristic Acid, and Stearic Acid
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Methyl Myristic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Myristic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Potassium Myristate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Myristic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Potassium Myristate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR