Leather:
Assuming that you have already tried several conventional methods for stain removal (such as soap and water, for example) our advice would be to use ethanol (spirits). The ink contains two pigments which are easily removed with ethanol, although this does not promise complete success.
However, you may be able to remove more pigment from your leather by using a spirit-saturated fleece cloth. Avoid rubbing, as the stain might spread this way. When working with ethanol, you must avoid naked flames, as spirits are very flammable. Additionally, we recommend testing the leather’s reaction to the spirit on a hidden part of the leather.
Textiles:
Unfortunately, with these STABILO products it is very difficult or even impossible to remove stains from textiles. However, this short guide may help you nonetheless. First of all, it is important to remove the excess ink dye which has not yet dried into the fibre. To do this, first put a dry, absorbent piece of fleece on top of the stain. Then press the ink out of the cloth from the back with a damp piece of fleece into the dry one. As the dry fleece absorbs the excessive ink immediately, the stain is prevented from spreading further. When you cannot press any more ink into the dry fleece using this method, only the ink which has already soaked in will be left on the fibre of your cloth.
This remaining ink can then be removed from the fibre using a stain-remover (like Sil or any other brand from the drugstore, ox-gall soap, etc.) according to the instructions of the detergent manufacturer. In this particular case, we recommend an oxidising stain-remover, as part of the ink could be removed through strong oxidation.
We recommend you test the detergent on a hidden spot first, to be sure that it will not affect the fibre or the colour of your cloth.
The level of success depends on the colour of the ink as well as the type of fibre. In general, cotton and synthetic fibres are more easy to clean than wool or silk fibres. White spirit or other solvents have no effect here.
If the reverse side is not accessible, you should not try to absorb the excessive ink with a dry fleece-sheet but rather attempt to dab it off with a slightly dampened piece of fleece. Avoid rubbing, as the stain might spread this way. Then wash the material at the appropriate temperature.
On furniture or wood flooring:
It is best to wipe the stain immediately with a slightly damp microfibre cloth, until the ink is removed as much as possible. If the ink cannot be removed this way, then carefully rub the stain with a damp cloth and a scouring agent for kitchen and bath. Please be careful not to damage the lacquering of the material. If the spot has turned dull, try to bring back the shine of the spots with a car polisher containing no abrasives.
For untreated wood, the ink is usually absorbed by the wood like aqueous stains and thus it is unfortunately very difficult or hard to be removed. Depending on how deep the ink has penetrated, polishing with an abrasive pad / sandpaper could be successful. It should be noted that the colour of the wood may change and may have to be re-sealed or waxed.
On walls (plastered or painted):
Unfortunately, these stains cannot be removed without residue any more, they must be painted over by wall paint. Please dab the stain first with a slightly damp microfibre cloth until no more ink gets detached from the wall.
Caution: When using a too wet cloth, the stain will enlarge.
Then the spot must be primed a sealing primer (DIY store / Painter shop). This procedure is intended to avoid ink to dissolve from the stain through the damp wall colour and then to migrate through the wall paint to the surface and thus to become visible again.