Glycols are a type of organic compound that belong to a larger group known as alcohols. They are characterized by having two hydroxyl groups (-OH) in their chemical structure, which makes them versatile and useful in various applications. Common examples of glycols include ethylene glycol and propylene glycol, both of which are widely used in industries such as automotive and food processing. These compounds are often used as antifreeze in vehicles, helping to prevent engine overheating. Additionally, propylene glycol is commonly found in food products and cosmetics, serving as a humectant to retain moisture. Overall, glycols play an important role in everyday products and industrial processes.