Interior detailing involves a deep cleaning of the whole interior cabin. Vehicle interiors of the last 50 years comprise a variety of materials, such as synthetic carpet upholstery, vinyl, leather, various natural fibers, carbon fiber composites, plastics, and others, which necessitates the use of a variety of cleaning techniques and products. Vacuuming is standard, and upholstery stains may be removed using steam cleaning, liquid and foam chemicals, as well as brushes. Fungus or mould (commonly found in leather seats and dashboard during rainy season) can be cleaned using white vinegar. Additionally, some nonporous surfaces may be polished.