You have not mention whether this stain has been attempted, making it easier to remove from the original state.
Moreover, if the leather has a standard finish, then the stain should be lifted off the finish without causing any concern to the leather.
Product to be used would be Prep-7.7, apply to the stain with the help of either the foam brush or the horsehair brush, which ever you think more convenience to apply the Prep-7.7 direct to the stain.
A cut out paper towel is ready to place over the Prep-7.7 and squeeze through the paper without air spaces.
Leave the Prep-7.7 for the next 24 hours, if the stain is on the vertical section, you can use a kitchen cling wrapper to hold it from falling off.
When peeling off the paper towel to inspect proves not satisfactory change to a new towel and repeat for the next 24 hours and this can be repeated to another 24 hours to a total of 72 hours.
So write the time and the day on the first application to keep a record of the process.
When the stain is reverse transfer successfully, remove the sticky residue using Cleaner-3.8 follows with Rinse-3.0 to a normal healthy squeaky feel even when dry.
Any area or location that darkens when wet will need to be soften with Hydrator-3.3 follows with Fatliquor-5.0 (show some pictures and I will recommend if it is necessary).
If the stain areas feels the same as new unused areas, then the Protection-B+ is what you will need – just spray and wipe. This protection will impart the leather with a non-stick and rub resistant surface.
You have asked about the routine maintenance and Protection-B+ answer your question on which product to use.
Cleaning with Cleaner-3.8 using a horsehair brush to lightly agitate follows with towel extraction is to remove soiling follows with Rinse-3.0 and towel extract until the towel shows clean. This simple system will keep your leather perpetually white and beautiful.
Protection-B+ can either be use alone or after drying from Rinse-3.0
See this Semi-Aniline Problem Solving Guide for other soiling problems.
Here’s the Micro-Pigmented leather problem solving guide for reference.
http://i300.photobucket.com/albums/nn4/Rogerkoh/Pm.jpg
Leather-Safe Problem Solving Guide (P.m) – Micro Pigmented / Semi-Aniline Leathers
Products mentioned are found in this Kit Sa5.di
http://i300.photobucket.com/albums/nn4/Rogerkoh/Leather%20Doctor%20products/KitAp5di_zps88422c58.jpg
Leather Doctor® Semi Aniline Leather Standard Care + Ink/Dye + Bleach + Topcoat = Kit Sa5.di
See examples:
#1 Dye Stains
http://i300.photobucket.com/albums/nn4/Rogerkoh/Leather%20Upholstery/InkStainRemovalTechnique-1.jpg
#2 Prep-7.7 Applications
http://i300.photobucket.com/albums/nn4/Rogerkoh/Leather%20Upholstery/InkStainRemovalTechnique-2.jpg
#3 Place paper towel and squeeze through the Prep-7.7 without leaving air space
http://i300.photobucket.com/albums/nn4/Rogerkoh/Leather%20Upholstery/InkStainRemovalTechnique-3.jpg
#4 Peel the paper towel off after 24 hours.
http://i300.photobucket.com/albums/nn4/Rogerkoh/Leather%20Upholstery/InkStainRemovalTechnique-05.jpg
Questions are welcome.
Roger Koh
[email protected]