Isostearyl lactate

Isostearyl lactate (CAS 42131-28-2), also known as isooctadecyl lactate, is an ester of isostearyl alcohol and lactic acid used primarily as an emollient and skin-conditioning agent in cosmetic formulations. Its branched-chain structure delivers a lightweight, non-greasy skin feel that positions it as a preferred alternative to heavier esters in leave-on and rinse-off products. In personal care, it functions as an emollient.

It acts as a spreading agent in facial moisturizers, sunscreens, and color cosmetics, improving texture and skin adhesion without occlusive heaviness. Formulators also use it as a plasticizer and softener. This material is utilized in film-forming systems, including nail care and hair coating products. In lubricants and metalworking fluids, it contributes lubricity and acts as a coupling agent between components.

It bridges polar and non-polar components effectively. Coatings and adhesive formulations incorporate it to improve flexibility and substrate wetting in specialty applications across various industrial sectors. Isostearyl lactate is supplied as a clear, pale liquid suitable for direct incorporation into oil phases or anhydrous systems. It is available in cosmetic-grade quality meeting personal care industry standards.

Technical-grade material is also offered for industrial lubricant and coating applications. Packaging typically ranges from drums to intermediate bulk containers depending on specific volume requirements.