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Moreover, HPMC is used in the formulation of ophthalmic solutions and eye drops, where it acts as a stabilizer and viscosity-increasing agent. Its properties also help in reducing the evaporation rate of the solution, thus improving the moisture retention in the eyes, making it an essential ingredient in dry eye treatments.

Furthermore, HPMC is known for its superior film-forming properties. This characteristic makes it an excellent candidate for use in coatings, such as for controlled-release formulations in pharmaceuticals, where the rate of drug release can be fine-tuned for therapeutic effects. HEC, while still functional as a film former, does not match the efficacy of HPMC in this regard.

However, as with any substance, the quality and sourcing of hydroxyethylcellulose are critical. It is essential for manufacturers to ensure that the cellulose used in the production of HEC is sourced sustainably and ethically. This consideration not only reflects the growing consumer demand for responsible sourcing but also reinforces the commitment to environmental sustainability.

5. Stabilization HPMC helps stabilize emulsions and suspensions, ensuring uniform distribution of active ingredients in formulations.

- Water Solubility HPMC is soluble in water, forming a gel-like consistency that is desirable in various applications.