Dea-Cetyl Phosphate

What is Dea-Cetyl Phosphate?

DEA-Cetyl Phosphate is the diethanolamine salt of cetyl phosphate, a phosphoric acid ester linked to cetyl alcohol, making it a synthetic amphiphilic molecule. Classified as an anionic surfactant, it appears in rinse-off products like shampoos and body washes, as well as leave-on items such as creams and lotions. Its primary function involves reducing interfacial tension at oil-water boundaries, promoting stable emulsions that prevent phase separation and ensure uniform consistency. In cleansing formulations, it aids in dispersing soils and oils, facilitating their removal with water. The molecule's phosphate head group provides negative charge for interaction with positively charged particles, while the long cetyl chain anchors into oily phases, enabling micelle formation for solubilization and foaming support. This dual role supports product stability, spreadability, and sensory feel across various cosmetic categories.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Facilitates stable blending of oils and water for smooth lotion textures.

Enables effective dirt and oil removal in cleansers.

Contributes to foam generation in shampoos and washes.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Users of emulsion-based moisturizers seeking consistent application.
People sensitive to amine-based surfactants.
Individuals using daily cleansers for reliable rinse-off performance.
Those preferring products without ethanolamine derivatives.
Those prioritizing non-comedogenic ingredients in routines.
Individuals concerned about potential impurities in formulations.

Safety Notes

  • Cosmetic reviews affirm safety within typical use levels in products.
  • Low comedogenic potential supports inclusion in acne-prone routines.

Frequently Asked Questions about Dea-Cetyl Phosphate

What does DEA-Cetyl Phosphate do in products?

It acts as a surfactant to cleanse and an emulsifier to mix oil and water stably.

Is it comedogenic?

It carries a rating of zero, indicating low likelihood of pore clogging.

What are common uses?

Found in shampoos, body washes, creams, and lotions for texture and performance.