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Hydroxypropylcellulose (HPC) is a cellulose derivative obtained by the reaction of cellulose with propylene oxide. It is a white, odorless, and tasteless powder that is soluble in water and many organic solvents. HPC is widely used in various industries due to its versatile properties.

In the pharmaceutical industry, HPC is used as a tablet binder, disintegrant, and film former. It helps in improving the flowability of powders, binding them into tablets, and aiding in their disintegration upon contact with water. Additionally, HPC is used in the formulation of sustained-release and controlled-release drugs.

In the food industry, HPC serves as a stabilizer, thickener, and emulsifier. It helps in maintaining the texture and stability of food products, preventing the separation of ingredients and improving their shelf life.

In the cosmetics industry, HPC is used as a thickener, stabilizer, and film former. It helps in creating a smooth and even texture in creams, lotions, and gels, and also aids in the formation of a protective film on the skin.

HPC is generally recognized as safe (GRAS) by the U.S. Food and Drug Administration (FDA) and the European Food Safety Authority (EFSA) for use in food and pharmaceutical applications. However, it is important to note that HPC can cause allergic reactions in some individuals, and it should be used with caution in such cases.