Potassium Cetyl Phosphate is the potassium salt of a complex mixture of esters of phosphoric acid and Cetyl Alcohol, a multi-functioning fatty alcohol.
Potassium Cetyl Phosphate is a surfactant and emulsifying agent used as a detergent and cleansing agent, according to CosmeticsCop.com, in a variety of beauty products and cosmetics, including shampoos, facial cleansers, exfoliants, sunscreens, moisturizers, and make up removers.
Easy to handle: hot water soluble
Emulsion Stabilizer: overcomes imbalances in HLB emulsifier values
Neutralized form: ready to use
Support small droplet sizes, good spread ability on skin, pleasant skin feeling
Easier to use than polyacrylic acid in emulsion manufacturing, without dispersion, wetting problems or fish eyes in solution.
Good stability with a broad variety of oil blends
Water resistant sun protection
Although the Cosmetics Database finds Potassium Cetyl Phosphate to be a 100% safe ingredient and no studies were found that listed any negative side effects or adverse safety measures, one of its primary components, Cetyl Alcohol, can be considered an irritant when used on sensitive skin, so it should be used with some caution.
None are recorded.
Source: TruthinAging, https://www.truthinaging.com/ingredients/potassium-cetyl-phosphate