
The punctual losses of polychrome, which are fortunately minor, are rejoined with watercolors, to facilitate a good visual reading of the work.
Once varnished the pictorial layer, just set some punctual with agglutinative pigments and varnish.
If you want to deepen the into the study of the attribution of the work onto Maíno and its restoration, see:
Francesc Quílez, Una nova atribució La conversió de sant Pau de Juan Bautista Maíno [2] (pdf, in Catalan)