Nail polish is a lacquer applied to human finger or toe nails to decorate and protect the nail plate. Today's nail polish is a refined version similar to the paint on vehicles. However, its formula has been revised repeatedly to prevent the cracking or flaking that occurs with the natural movement of the nail.
Modern nail polish is sold in liquid form in small bottles and is applied with a tiny brush. Within a few minutes after application, the substance hardens and forms a shiny coating on the fingernail that is both water- and chip-resistant. Generally, a coating of nail polish may last several days before it begins to chip and fall off. Nail polish can also be removed manually by applying nail polish "remover," a substance designed to break down and dissolve the polish.
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