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Remember that ink stains can be very stubborn. So you need to have patience in removing the stain. You can remove the stain with a white towel by either using hair spray, or nail polish remover, or isopropyl in it. Then blot it on the stained part from the outside edges to the inside.
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To get rid of a coffee stain, mix one teaspoon of a mild, ph-balanced detergent with one cup of warm water, then blot from the outside in. Follow this with blotting the stain with a mixture of one-third cup white vinegar with two-thirds cup water. When finished, use a clean, white towel to absorb any excess, allow the area to dry.