Wash tie
The ties of my husband, I wash in the washing machine when they are made of synthetics.
To do this, roll up the tie loosely from the narrow side. Then tie into a women's fine sock, tie a knot at one side, and push the rolled up tie to the knot.
Then at the other end of the stocking close to the tie also make a knot. Now the tie at 30 degrees in the washing machine.
After the wash untie a knot and hang the tie nicely smooth to dry.