Potassium Cetyl Phosphate

Potassium Cetyl Phosphate (potassium salt of cetyl phosphate or cetyl alcohol phosphoric acid ester) is a water-soluble white powder with a melting point of 68°C. It is an anionic, oil-in-water emulsifier and an analog of the natural phospholipids in the skin. It's versatile, consistent, and compatible with the skin, a valuable emulsifier in the formulation of emulsions over a wide pH range (4-9).

The potassium salt of cetyl phosphate is noted for its high physical and chemical stability, compatibility with non-polar and polar oils, and analogy to natural phospholipidic structures, indicating mildness and collocability with human skin. It is generally used as a co-emulsifier with low HLB nonionics and is completely non-irritating to the skin. It can replace TEA-stearate in most preparations.

Like skin lipids, Potassium Cetyl Phosphate is structurally similar to natural phospholipids like lecithins and cephalins. It has multiple beneficial effects on the skin, including enhancing the lipid barrier, limiting transdermal water loss, and improving elasticity. It is used in skin, hair, and sun care products and is ideal for the accepted formulation of water-resistant products.

Formulas with Potassium Cetyl Phosphate leave a mild action on the skin and are thus recommended in preparations for sensitive skin. Products containing this ingredient display enhanced shear, heat, and freeze-thaw stability. In addition, they impart a vibrant texture and feel to the skin. They are ideally suitable for use in many dermatological and personal care products.

Typically used as a primary emulsifier at low concentrations, Potassium Cetyl Phosphate is also used as an emulsion stabilizer to improve the stability and the sensory properties of conventional anionic or non-ionic emulsions at a concentration level. Emulsions with potassium salt of cetyl phosphate esters exhibit small particle sizes, which, in addition to stability, provide a good skin feeling and an easy and uniform distribution. In addition, this ingredient is especially suitable for sun-care formulations, as it improves water resistance and durability and facilitates the homogeneous spreading of UV filters to boost protection.