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There are two basic rules of stain
removal: 1) like dissolves like 2) most foods are acidic. Classic for removing
black coffee is a dilute solution of organic acid with a little surfactant to
assist detergency, suspension and rinsing. This presumes that the kimono dye/paint
will not bleed in water or acid. For acids, my preference is lactic acid about
3%; white vinegar works but smells (= acetic acid 5%); or dilute citric acid.
If the kimono bleeds in water trying to remove with a dryside emulsion would
require a dryside solvent that does not affect the dye/paint. The most
difficult part of stain removal on silk is the feathering of the waterline with
a semi-damp 100% cotton q-tip. You can read up on basic stain removal at http://www.si.edu/mci/english/learn_more/taking_care/stains.html
. Sometimes if you can removal a portion stain and break up its shape-- from
the white embroidery for example and its watermark edge—you can reduce
its disfigurement of the garment even if the whole stain is not removed. Best
wishes! Mary W. Ballard Senior Textiles Conservator, Museum Conservation Institute, Smithsonian
Institution tel: 301-238-1210 fax: 301-238-3709 email ballardm@xxxxxx From:
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