Ceteth-20 Phosphate

What is Ceteth-20 Phosphate?

Ceteth-20 Phosphate is a synthetic phosphate ester derived from cetyl alcohol ethoxylated with 20 units of ethylene oxide. This anionic surfactant features a hydrophilic phosphate head and a lipophilic alkyl chain, making it effective in water-based formulations. Commonly used in shampoos, body washes, facial cleansers, and stabilizing emulsions like lotions and creams, it works by lowering surface tension to mix oil and water phases seamlessly. In cleansing products, it forms micelles that encapsulate dirt, excess sebum, and residues, allowing them to rinse away cleanly. Its emulsifying action prevents ingredient separation, ensuring product consistency, while contributing to rich, creamy lather in rinse-off items. Designed for mild performance, it balances efficacy with gentleness on skin and hair.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-3 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.
Cleansing agent
Removes dirt, oil, and impurities by lowering surface tension and forming micelles, enabling soils to be lifted and rinsed away from skin, hair, or teeth.

Benefits

Delivers thorough cleansing by lifting impurities without harsh stripping.

Stabilizes emulsions for smooth, consistent product textures.

Supports foaming for satisfying application in washes and shampoos.

Who It's For

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

Who May Benefit Who Should Avoid
Individuals seeking effective yet gentle daily cleansers.
Those with rare sensitivity to phosphate esters.
Users of emulsion-based moisturizers and lotions.
Individuals allergic to ethoxylated alcohols.
People preferring low-comedogenic ingredients in routines.
Users preferring completely phosphate-free formulations.

Safety Notes

  • Generally regarded as safe for cosmetic use in typical concentrations.
  • Low comedogenic potential, unlikely to clog pores.

Frequently Asked Questions about Ceteth-20 Phosphate

What does Ceteth-20 Phosphate do in products?

It acts as a surfactant to cleanse, emulsify oils and water, and create foam in washes and lotions.

Is it safe for everyday use?

Yes, it has a low hazard rating and is suitable for frequent cosmetic applications.

Does it cause breakouts?

It carries a comedogenic rating of zero, making it non-pore-clogging.