Methyl cellulose (or
methylcellulose) is a
chemical compound derived from
cellulose. It is a
hydrophilic white powder in pure form and dissolves in cold (but not in hot) water, forming a clear viscous solution or gel. It is sold under a variety of trade names and is used as a thickener and
emulsifier in various food and cosmetic products, and also as a treatment of
constipation. Like cellulose, it is not digestible, not toxic, and not an
allergen.