http://www.kunsthaus.ch/en/the-collection/conservation/examples-from-the-world-of-art-conservation/auguste-rodin/stage-2/protective-layer/protective-layer/

Kunsthaus Zürich

Protective layer

Application of liquid wax on the warmed bronze surface (Photo:  G. Pegurri)
Application of liquid wax on the warmed bronze surface
(Photo: G. Pegurri)