Overview
Auto detailing is an activity that keeps the vehicle in its best possible condition, especially cosmetic, as opposed to mechanical. This is achieved by removing both visible and invisible contaminants from the vehicle's interior, and polishing the exterior to its original blemish-free finish. The most basic detail options include an exterior wash and wax, interior vacuuming, window cleaning and surface polishing.
Background
Professional detailing services and sale of products to both professionals and enthusiasts represent a large commercial presence in places where automobiles are a primary mode of transport. In the United States alone, the professional and home detailing industry was over $9 billion in revenue, as of April 2014.
Components of detailing
Detailing is more than a cleaning process to make a vehicle look good, but a systematic approach to help extend its life with methods and products that reduce damaging environmental elements such as dirt, sun, harsh winters, etc. Appropriate maintenance or restoration of vehicles to keep them looking outside and inside as if they came from an auto dealer's showroom increase their resale value. Auto detailing requires knowledge of proper techniques and use of tools and products.
Detailing is generally broken down into two categories: exterior and interior (or cabin). There are products and services that focus on these two areas specifically.
From Wikipedia (CC BY-SA 4.0).