Potassium Cetyl Phosphate (potassium salt of cetyl phosphate or cetyl alcohol phosphoric acid ester) 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 both non-polar and polar oils, and analogy to natural phospholipidic structures, which indicates mildness and collocability with human skin.
Like skin lipids, Potassium Cetyl Phosphate is structurally close to natural phospholipids like lecithins and cephalins with multiple beneficial effects on the skin, including enhancement of lipid barrier, limitation of transdermal water loss, and elasticity improvement. 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 mild action on the skin, thus, recommended in preparations for sensitive skin. In addition, it imparts a vibrant texture and feels to the skin.
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 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.