Mucin is a glycoprotein molecule that is found in abundance in the human body, especially in its mucous membranes. It acts as a lubricant to reduce friction and aid in transport. It also functions as a barrier to protect the body from infections, allergens and toxins. It also helps to create an environment in which beneficial bacteria can thrive. Mucin is also important for digestion, as it helps to form a protective layer in the digestive tract, preventing the absorption of unwanted substances. Mucin also helps to maintain skin hydration and keeps skin healthy. It has also been found to have anti-inflammatory properties, making it beneficial for a variety of medical conditions.