Silk is a very difficult fabric to treat as it is quite delicate and should be treated with care. The most common question we receive are how to treat oil stains on silk shirts. If you are looking to treat oil stains, sprinkle corn starch on the spot, let it sit for a couple of hours and then brush off the excess with a cloth. Never ever use water when it comes to silks this is a no no and can quickly ruin your clothing. Also be very careful when it comes to using stain removers on silks as many can discolor the garment.