A surgical mask, also known as a medical face mask or procedure mask, is a loose-fitting, disposable device that creates a physical barrier between the mouth and nose of the wearer and potential contaminants in the immediate environment. It is typically made of non-woven fabric, such as polypropylene, and consists of three layers:

• The outer layer is water-resistant and protects the wearer from splashes and sprays.
• The middle layer is the filter layer and is made of a material that filters out particles and bacteria.
• The inner layer is soft and absorbent and prevents the wearer from inhaling irritants.
  

  Surgical mask

There are regulated by the Food and Drug Administration (FDA) in the United States and are classified as Class I medical devices. They are not designed to be used for long periods of time and should be changed frequently, especially if they become wet or soiled.

Here are some of the benefits of wearing:

• It can help to reduce the spread of airborne illnesses, such as the flu and COVID-19.
• It can protect the wearer from inhaling dust, pollen, and other allergens.
• It can help to keep the wearer’s face warm in cold weather.

However, it is important to note that are not perfect and do not provide complete protection from airborne contaminants. They are also not a substitute for good hand hygiene and other measures to prevent the spread of infection. Sources..