A high-molecular-weight thickener precisely esterified with oleic acid on a naturally-derived methyl glucose backbone, delivering outstanding viscosity control across a wide range of aqueous cleansing formulations including cleansers, shampoos, body washes, and liquid soaps. Its excellent compatibility with amphoteric surfactant systems enables rich, non-irritating viscosity, making it a naturally-derived premium thickening solution that can be used with confidence even in baby shampoo formulations where irritation minimization is paramount — as well as for sensitive skin care.