Lasers to be used to clean historic paintings

Long used to clean metal and stone, lasers may be the new tool of choice for cleaning famous works of art. The technique is the same used to remove tattoos.

"If you compare it with mechanical means, the laser is able to distinguish what must be removed in a way that is much more selective than traditional techniques," said Dr Salvatore Siano of the Applied Physics Institute-CNR in Florence, Italy.