Aluminium is a very light material. It is also a relatively soft material and can easily be shaped using various processing techniques. The long lifespan is one of the reasons why aluminium is a sustainable material. It is strong, light, mouldable and easy to work with.
Take warm water and soap. Moisten the soft cloth with this and run it over the aluminium until it is clean. Then rinse the aluminium with water and let the surface dry.