>>> I'm guessing it is some kind of color transfer from maybe clothes or other material. Could you tell me which products I need to get in addition to the products of the A3 kit to be able to remove these blackish marks?
You would need CleanDye-7.9 and other supportive system to pH-balance and rinse and possibly a topcoat refinishing. Please read the following and if you need further help.
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Products are found in the on-line store link:
http://www.leatherdoctor.com/cleandye-7-9-1/
CleanDye-7.9 is a water-based formulation for dye stain removal. Especially effective on new blue jeans dye transfer onto leather and suede surface. This is a pH 7.9 high viscosity dyestuff remover that works by dwell-time allowing its superior penetrating, lubricating and suspending power to do its work thus reduce unnecessary physical rubbing that may do more finishing damages to non-absorbent leathers. Absorbent leather and suede is to use a quick dry agitation with lightly saturated cotton bud, pad or cloth to avoid unnecessary product absorption by the leather and suede. As dyestuff is reverse transfer, turn or change to new application and repeat until the stain is satisfactorily removed. The leather pH value of 3 to 5 need to be balanced back from pH 7.9 exposure, especially the absorbent leather and suede and sticky residue removed with Acidifier-2.0 as a holistic leather and suede safe dye stain removal process. Pior damaged topcoat that affects the luster level is rectified according with the appropriate topcoat like MicroTop-54G, AnilineTop-76G, etc. Rub-resistant preventive care with Protector-B, D, W or S is the final application to satisfied the tactile feel and an option with the classical scent of leather.
Absorbent Leather and Suede Instruction:
1- Transfer CleanDye-7.9 to lightly damp cotton bud, pad or towel.
2- Lightly agitate the dye stain and observe the cotton bud.
3- If dye is transfer to the cotton bud, repeat the entire stain area accordingly to satisfaction.
4- pH balance and rinse sticky residue with Acidifier-2.0.
5- AnilineTop-76 Gloss or Satin to match as an option
6- Protector-B or B+ to help reduce friction transfer stains.
Non-Absorbent Leather Instruction:
1- Place Towel-5 over the stain and apply CleanDye-7.9 free of air bubbles in between.
2- Allow the suspended stain to be transfer to the paper towel.
3- Inspect for satisfaction or repeat above 1 and 2 until satisfaction.
4- pH balance and rinse sticky residue with Acidifier-2.0.
5- MicroTop-54 Gloss, Satin or Matte to match as an option.
6- Protector-B or B+ to help reduce friction transfer stains.
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Roger Koh
Leather, Skin & Hair Care System Formulator
Consultant / Practitioner / Instructor / Online-Life-Coaching
online store: www.leatherdoctor.com
forum: www.leathercleaningrestorationforum.com
email:
[email protected]