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One of the most notable attributes of hydroxyethylcellulose is its ability to form gels through simple dissolution in water. When heated, HEC can swell and undergo a transformation, creating a smooth and homogeneous gel. This property is particularly beneficial in the formulation of topical pharmaceutical products, such as creams and ointments, offering enhanced drug delivery systems. The incorporation of HEC in these formulations helps in controlling the release of active ingredients, improving their bioavailability, and providing sustained therapeutic effects.