Ceteth-20 Phosphate
Reviewed by Rosie · Last updated 18 Aug 2026
Also known as: Ester, Cetyl Alcohol, Phosphoric Acid
Mild cleansing agent made from derivatives of phosphoric acid and cetyl alcohol | Helps control the viscosity of liquid emulsions
Addresses
EWG Safety Score
What Is Ceteth-20 Phosphate?
Ceteth-20 phosphate is a mild cleansing agent made from chemically combining derivatives of phosphoric acid and the gentle fatty alcohol cetyl alcohol. It’s most often blended with emulsifiers to help create and maintain the stability of liquid emulsions.
On the other hand, ceteth-20 phosphate may also be combined with thicker emulsifiers and emollients to control the viscosity and improve the stability of cream formulas. Blends that contain this ingredient are typically advised for use between 2–4% concentrations.
Ceteth-20 phosphate may be animal or plant-derived or also made synthetically.
Clinical Evidence & References
Published Research
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International Journal of Pharmaceutics, August 2014, pages 69–74 [https://www.sciencedirect.com/science/article/pii/S0378517314003469]
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International Journal of Pharmaceutics, August 2011, pages 301–306 [https://www.sciencedirect.com/science/article/pii/S037851731100528X]
Frequently Asked Questions
From the Clinic
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Cetyl Betaine
Type of salt formed with a compound with acidic + basic properties
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