Yes, a complete removal without damaging to the leather finish has been proven especially cleaning off brass studs on chesterfield style upholstery, brass zipper that have contacted suede.
Just use cotton swab to apply direct to the stain and leave it until dry to see the chemical reaction, for heavier stain a repeat may be necessary. When the stain varnish with satisfaction neutralize it with Basifier-8.8 and leave until dry.
Further reading:
Stain Remover - Tarnish
Tarnish stain remover is design for removing any stains cause by metal, be it rust or tarnish. Quite often, tarnish stains developed around upholstery tacks, or metal accessories of leathers including from button and zipper of garments, and most often near metal buckles of belts and bags. Most tarnish stain-remover is a low pH acidic solution and is recommended to be neutralized thereafter, with a low alkaline basifier. Tarnish stain remover is another acidic product that works by chemical reaction at the molecular level.
Products mentioned are d’Tarnish-1.3 and Basifier-8.8 found in this Kit A3.hs
Leather Doctor® Kit A3.hs = Aniline Leather Care + Dye-Remover + Tarnish Remover
Roger Koh
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