Schmincke Phöbus A - restoring medium

Reviver to restore brittle and dull oil-colour layers which have been through dried over a long period.
Rub in the medium sparingly (!) with a soft lint-free cloth until original brightness is regained. The necessary penetration time depends on the hardness of the colour layers. On principle: as short as possible. Remove the medium carefully from the surface with oil of turpentine or turpentine substitute. Follow-up treatment with final or picture varnish is recommended (please wait some weeks until the picture layers has been consolidate). Pre-tests before use!

Thinner: turpentine substitute