A sponge is a tool or cleaning aid consisting of porous material. Sponges are usually used for cleaning impervious surfaces. They are especially good at absorbing water and water-based solutions.
Sponges are commonly made from cellulose wood fibers or foamed plastic polymers. Some natural sponges are still sold, but most are now used either as body or facial sponges (bath sponges) or as tools for sponge painting.
The three other categories of available synthetic sponges are: low-density polyether (known as the rainbow packs of non-absorbent sponges), PVA a highly absorbent material and polyester.
Polyester sponges are subdivided into a variety of types, some of which are reticulated (artificially broken-in) for ease of use. One type, double-blown polyester, has high water-retention ability approaching or equaling that of PVA sponges, but with visible pores and more diverse uses.
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To remove the film of grime which forms on the bodywork use plenty of clean water. Do not wipe...