What brush is used to polish classical oil paintings?

Brushes are flat, usually horse hair or cow hair, and synthetic materials are also acceptable, as long as they are flexible.

Light oil is generally made of turpentine dissolved resin, turpentine will dissolve the wet color layer. The drying time of oil painting varies with the pigments and painting methods used. Brushing with a brush and polishing with a brush are more traditional methods, dipping in varnish and crossing for polishing.