Cetyl Phosphate
AKA “Hexadecyl dihydrogen phosphate, 3539-43-3, Hexadecyl phosphate, 1-Hexadecanol, dihydrogen phosphate, Hostaphat CC 100, VT07D6X67O, MACKESTER CEP, CRODAFOS MCA, DTXSID1045039
Surfactant
Ingredient Facts
Cetyl phosphate
AKA: Hexadecyl dihydrogen phosphate, 3539-43-3, Hexadecyl phosphate, 1-Hexadecanol, Dihydrogen phosphate, Hostaphat CC 100, VT07D6X67O, MACKESTER CEP, CRODAFOS MCA, DTXSID1045039
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Emulsifier
Clean
Hexadecyl dihydrogen phosphate
Formula
C16H35O4P
Mol. Weight
322.42
CAS #
3539-43-3
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.
Surfactant Cleansing
Surfactant Emulsifying
Anti-Inflammatory
Moisturizing
Boosts Collagen
Lifts away dirt and oil
Mixes oil and water
Traditional Use
A synthetic emulsifier and skin conditioning agent developed for modern cosmetics. Created to stabilize oil-water mixtures and improve the absorption and feel of skincare formulations.
Skin Types
all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Calcium Dihydrogen Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Cetyl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Dicetyl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Potassium Cetyl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tricetyl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Cetyl Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Dicetyl Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Potassium Cetyl Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
A retinyl palmitate-loaded solid lipid nanoparticle system: effect of surface modification with dicetyl phosphate on skin permeation in vitro and anti
Jeon HS, Seo JE, Kim MS, Kang MH, Oh DH et al.
International journal of pharmaceutics, 2013
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR