Propylene glycol is a colorless, odorless, thick, synthetic liquid that is a man-made alcohol. It has many uses, including:
Food
As a texture, taste, and thickness additive in food products. It can also be used as a solvent for food colors and flavors.
Cosmetics
As a moisturizer in creams and other products. It can also help distribute other ingredients evenly and prevent products from freezing.
Pharmaceuticals
As an excipient in a variety of drugs.
Industrial
As an antifreeze, deicer, and additive to latex paints and coatings. It can also be used to make artificial smoke or fog for fire-fighting training and theater productions.
Other
As a solvent, in brake and hydraulic fluids, and to make polyester compounds and polyurethane resins.