Review your things that you haven't worn in a while. Or check tablecloths and napkins. I'm sure with time, they are slightly yellow.
Wash it before bleaching thing in warm water with a mild detergent, without rubbing, without twisting the product (wet reduced strength). Silk does not like intensive mechanical action. If you put the thing in the washing machine, then put the delicate cycle with some mild detergent was added. If contaminated, you can repeat the process.
After washing silk products very carefully rinse with warm water.
Bleach product with a mild bleach, which enriches the water with oxygen. The stores sold a variety of means, suitable for silk fabrics.
Buy in-store bleaching powder "Diola" based on thiourea dioxide. They are allowed to bleach almost all types of fabrics, including silk. Prepare a solution of 10 liters of water, pour 3 tablespoons of the drug. Things to keep in the solution for 30 minutes at temperatures above 60 degrees.
It was not at hand at the right moment a bleaching agent? Cook it at home. For bleaching silk, it is best to use hydrogen peroxide.
Calculate the proportion of 1 kilogram of Laundry. Take 30 grams (1chaynaya spoon) of hydrogen peroxide and mix them in 6-8 liters of water, add a few drops of ammonia. The solution temperature should not be above 30 degrees.
Soak silk products for 10-15 minutes, stirring them a few times in the tank. Then rinse with plenty of clean warm water.
For intense, but at the same time, a more mild bleaching to peroxide add 2 tablespoons of salt and soak the linen for a few hours.