The facial mask is a category of skincare products used to moisturize the skin and has multiple functions such as moisturizing nourishing, nourishing, improving appearance, and deep cleansing. Facial masks generally use hydroxyethyl cellulose as an emulsion stabilizer, thickener, and film-forming agent. Hydroxyethyl fiber has the following functions in the mask:

• The solubility and viscosity properties of hydroxyethyl cellulose are fully functional, and the characteristics of maintaining balance, so that the original shape of the cosmetics can be maintained even in the season of alternating cold and hot.
• It has moisturizing properties and is common in cosmetics for moisturizing products, especially facial masks and toners.
• Hydroxyethyl cellulose has the characteristics of lubricating and soft wearing in the mask.
• The mask containing hydroxyethyl fiber is more permeable to the skin.