Potassium Lauryl Phosphate
AKA “Lauryl phosphate, potassium salt, C4QT53N4MK, EMALOX LPK, 254-414-3, RefChem:1096545, DTXSID8029361, Dipotassium dodecyl phosphate, 39322-78-6, 19045-77-3”
Surfactant
Ingredient Facts
Potassium lauryl phosphate
AKA: Potassium salt, C4QT53N4MK, EMALOX LPK, 254-414-3, RefChem:1096545, DTXSID8029361, Dipotassium dodecyl phosphate, 39322-78-6, 19045-77-3
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Plant Oil
Clean
Potassium salt of lauryl phosphate
Effective at 4.42%
Formula
C12H25K2O4P
Mol. Weight
342.49
CAS #
39322-78-6
Form
Powder
State
Liquid; Water or Solvent Wet Solid
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.
Cleansing Surfactant
Removes Impurities
Traditional Use
Synthetic surfactant developed in the 20th century as part of the evolution toward gentler cleansing agents in cosmetics and personal care products.
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
Concentration Guide
0.14%
8.7%
0%12%
Effective Range
CIR reported use: 0.14-2 | 0.25-8.7
Regulatory Agencies
Disodium Lauryl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lauryl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Potassium Lauryl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Sodium Lauryl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Trilauryl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lauryl Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Potassium Lauryl Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Sodium Lauryl Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR