G.W. Ashworth’s scientific contributions

... However, studies of the compatibility of these protective layers with the paints used in urban art are scarce. To date, some studies have focused on the use of "anti-graffiti" products that modify the properties of the exposed surface, preventing the adherence of dirt, dust and graffiti paint and also facilitating the cleaning and removal of subsequent layers of paint; depending on the durability on the treated surface, these layers may be sacrificial, semisacrificial or permanent [42,43]. Use of these products on architectural heritage [44][45][46][47] and contemporary murals [18,[48][49][50] can reduce the deterioration associated with the deposition of atmospheric contaminants, biological colonization and graffiti vandalism. ...

Reference:

Efficacy of Colour Protectors in Urban Art Paintings under Different Conditions: From a Real Mural to the Laboratory