Wash silk in lukewarm water with a mild soap such as Ivory Snow or a gentle shampoo. Rinse it well, then add ¼ cup of white vinegar to a clean rinse and rinse again. This will neutralize any soap residue and restore the silk's natural luster. -
Simo Silk
If it's an alcohol-based marker:
Alcohol stains demand immediate attention. Fresh alcohol stains vanish if sponged several times with warm water. If not taken care of immediately, the alcohol stain will turn brown. If your stain has turned brown, dampen it and rub glycerin into it. After a half hour, rinse it off with warm water. For more stubborn alcohol stains, sponge the area with a solution of equal parts denatured alcohol and ammonia. Do not forget to rinse the area thoroughly in warm water when you're finished. -
Tips.Net