This is more a case of dye transfer than ink removal.
The longer it has been sitting on the finish the further the dye will have soaked into the finish and the harder it will be to remove.
Any universal stain removers or the use of solvents, alcohol etc. may well remove the finish on the leather and will not necessarily solve the problem.
Maxi Cleaner is a specifically formulated cleaner for this problem and if this will not remove the dye then there is no 'cleaning' solution.
The stronger the prodcucts get the more likely damage there is to the finish and this will then need rectifying. When no further dye can be removed the leather will need recolouring to match to cover over the dye that is left. Refinishing will be part of this process.
Have used Super Remover extensively and would use this as one of the next steps after Maxi Cleaner. It is a mixture of solvent and detergent and slightly softens the finish to enable any dye to be drawn out.
We always start with the least aggressive product and technically have a 5 stage process for dye transfer removal
Maxi Cleaner
Alcohol Cleaner
Remover 1 (the equivalent of Super Remover)
Remover 3
Recolour
this ensures that the least amount of damage is done to the finish and if you get as far as using Remover 3 you will need to recolour/refinish anyway but doing the 5 steps ensures that as much has been removed as possible to help reduce the chances of the dye coming back through.
Hope this helps
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