face roughness, while superhydrophobization was achieved using fabricated a superoleophobic polyester PDMS [38]. Artus et fabric coated with silicone nanofilaments and subsequent plasma fluorination 1391. other researchers achieved the fabrication es by layer by layer of superhydrophobic/superoleophobic text assembly l40l. plasma treatment 139], sol gel L41.421, chemical vapor phase deposition 431 and other methods144-46l. n this work we present a simple, cost effective and green chemi cal method for the production ofa coating on silk which shows both superhydrophobicity and superoleophocity accompanied by water and oil repellency. A water based emulsion of silane, siloxane and organic polymer is used and sprayed on silk. The resulting silox ane coating shows weak performance corresponding to relati low/high static/tilt contact angles of water and oil droplets. How ever, the properties of the coating material are tuned by adding SiO2 nanoparticles in the emulsion which enhance drastically both the hydrophobic and oleophobic character ofthe produced coating. 7o) the static and tilt contact increasing 150e) and decreasing angles, respectively. of both water and oil drops on treated silk. Dodecane droplets on treated silk are also studied to strengthen the reported observations. Furthermore, it is shown that the applied coatings can have negligible effects on the aesthetic appearance of dyed silk. The suggested method is designed to have potential to be used for the protection of historic silk textiles of the cul tural heritage. In 1963 Bradni published "La theoria del restauro" I47l.where the basic principles of conservation science were intro duced including reversibility which implies that any intervention on an object of the cultural heritage should be removable. We demonstrate that compressed carbon dioxide (co2), either in the supercritical or liquid state, mixed with a small amount ofmethanol (MeoH) is an effective solvent mixture which can remove the pro tective coatings from the silk substrate According to the above, the coating produced herein, (i) induces superhydrophobicitylsuperoleophocity accompanied by waterloil repellency silk, is applied without using organic solvents on (ii) silk and practically no effect on the aesthetic appearance of dyed (iv) can be removed by compressed co2. To the best of our knowledge, this is the first report where all these properties are combined in one product, designed for textile protection and conservation