It is possible to give to your panelling the patina of old wood. On tannin-rich wood like oak, apply an even coat of Oak Aging LOUIS XIII with a Brush. The wood will darken within a few minutes, with a shade corresponding exactly to the natural wood shade. Rinse and let dry, then sand lightly with Glass Paper 180. The product can be diluted with water for weaker action, the effect obtained can be neutralized with the Bleach Stain Remover LOUIS XIII. Test first on a hidden part.