Discolouration is becoming increasingly common with light-coloured top-grain leather. This usually affects car and furniture leather and is caused by dyes from clothing or belts rubbing off onto the surface of the upholstery. The resulting discolouration cannot be removed using common commercially-available cleaners.
First try and remove the stains with Mild or Strong Leather Cleaner. Also use the Leather Cleaning Brush. If this doesn’t solve the problem, then use the GLD Solvent.
Lightly damp a white cloth with GLD-Solvent and carefully clean the discolouration. Always test on a hidden area first. Because GLD-Solvent slightly dissolves the colour coating, take care not to remove too much. If too much colour is removed or visible stains remain, the areas can be re-coloured with Leather Fresh. Where a high opacity is required, apply several layers and dry in between with a hair dryer. To avoid further discolouration, the leather should be regularly protected with Leather Shield. Leather Shield is a good protection against discolouration. Only apply Leather Shield on clean leather.