In the late 19th century, a thick layer of dark yellow varnish covered Judith, which completely distorted the original painting; in addition, restorations conducted at different times had falsified the artist's intentions.

[1] In 1839 the Hermitage restorer A. Sidorov accurately transferred the painting from panel to canvas.

In 1967 it was decided to clean it, and the task was entrusted to A.M. Malova, a highly qualified restorer under the supervision of A.V.

The varnish was removed with a cotton tampon wetted in a special solution; other additional material was cleaned out using a very sharp scalpel under a microscope.

The paints became bright and deep, and a tower and hilly landscape on the background were revealed.