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Methyl hydroxyethyl cellulose (MHEC) is also used as a moisturizer and surfactant in cosmetics, baby lotions, shampoos, and bath oils. A surfactant is a wetting agent that lowers the surface tension of liquids and allows them to spread over a surface. It can be used as an emulsifier that keeps water-based and oil-based ingredients mixed in cosmetics.
The chemical structure of MHEC mirrors that of HPMC. It encompasses hydroxyethyl groups linked to the hydroxyl groups within cellulose. The degree of substitution (DS) governs the quantity of hydroxyethyl groups incorporated, influencing MHEC's solubility, viscosity, and other intrinsic traits. MHEC remains stable under standard conditions and exhibits resistance to microbial degradation.