Clean first, then paint
Paint does not bond to grease. Painting over a greasy commercial kitchen ceiling is the most common reason a repaint fails early: it looks fine for a few months, then blisters, discolours or peels at the edges, and you pay for the whole job twice.
We degrease the surface with our 100% biodegradable solution first. The paint then bonds to the substrate the way it was designed to.