Glycereth-26 is a polyethylene glycol derivative of glycerin used as a humectant, emollient, and solubilizer in cosmetic and personal care formulations. It helps retain moisture, improve product spreadability, and enhance the skin and hair feel. Commonly found in creams, lotions, hair conditioners, and cleansing products, it provides smoothness and hydration while improving formulation stability. Its water-soluble nature allows easy incorporation into aqueous systems.