Potassium hyaluronate

Potassium hyaluronate (CAS 31799-91-4), also known as hyaluronic acid potassium salt, is the potassium salt form of hyaluronic acid used as a humectant and film-forming agent in cosmetic and pharmaceutical formulations.

It attracts and retains moisture in skin and mucous membranes, making it a preferred ingredient where sodium-free or low-sodium formulations are required. In skincare, it is incorporated into serums, creams, and sheet masks.

These products deliver surface hydration and improve skin texture without occlusive agents. Ophthalmic formulators use it in eye drops and contact lens solutions where potassium ion compatibility with tear fluid is a formulation consideration.

It also functions as a viscosity modifier in topical gels and pharmaceutical carriers, helping control rheology in semi-solid systems. Biotech and tissue engineering applications use it as a scaffold component or cell culture additive.

These specialized applications require a defined ionic composition for optimal performance. Potassium hyaluronate is supplied as a white to off-white powder available in cosmetic-grade and pharmaceutical-grade specifications.

Molecular weight ranges are typically differentiated as low, medium, and high to match viscosity and penetration requirements. Buyers should confirm molecular weight distribution and purity specification when sourcing for regulated end-use applications.