Hydroxyethyl cellulose, also known by the trade name Natrosol, is a gelling and thickening agent derived from cellulose. It is widely used in cosmetics, cleaning solutions, and other household products.Hydroxyethyl cellulose and methyl cellulose are frequently used with hydrophobic drugs in capsule formulations, to improve the drugs' dissolution in the gastrointestinal fluids. This process is known as hydrophilization. Hydroxyethyl cellulose, also known by the trade name Natrosol, is a gelling and thickening agent derived from cellulose. It is widely used in cosmetics, cleaning solutions, and other household products.Hydroxyethyl cellulose and methyl cellulose are frequently used with hydrophobic drugs in capsule formulations, to improve the drugs' dissolution in the gastrointestinal fluids. This process is known as hydrophilization.