This rectified turpentine from Talens is for thinning oil colour and cleaning brushes and other art materials. 
 
Makes oil paint leaner (use in lower layers).
Allows brush stroke to run
Suitable for removing (dry) varnish coats.
 Suitable for dissolving (natural) resins.
Also for thinning mediums and varnishes for oil colour.
Flammable
 Composition: Portuguese gum turpentine (distillate from resinous balsam of the pine tree).