A mask is a piece of cloth or other material that is worn over the mouth and nose to protect against the inhalation of harmful substances, such as dust, germs, or pollution. They also serve to prevent the spread of illnesses, particularly in situations where social distancing is not possible. Masks can be made of a variety of materials, including cloth, paper, and medical-grade materials like surgical masks. The effectiveness of a mask depends on several factors, including the type of material it is made of, the fit, and the number of layers. In the wake of the COVID-19 pandemic, masks have become a common item in daily life, with many countries and businesses requiring their use in public spaces. Wearing a mask is widely considered to be an important tool in controlling the spread of the virus and protecting public health. In addition to their practical uses, masks can also be found in a variety of styles and designs, offering a creative outlet for self-expression.