Whether or not you choose to use fabric softener, the silk will get softer the more you use it. ... After that, if you desire to soften it more, just put some liquid fabric softener and cold water in a bowl or sink, add your silk and swish a few times. Let it soak for a few minutes, then hang to dry. Iron when dry.

What happens to make the silk softer?

The cocoons are rinsed in hot water to loosen the threads. Women would unwind the cocoons and then combine six or so fibers into silk threads. The threads are woven into cloth. The cloth is then pounded to make it softer.

How do you make silk soft again?

To restore some of the shine and softness that's been lost, you can give your silk pieces a mild white vinegar bath. White vinegar helps to remove any residual soap in the fibres, and also restores lustre and softness to silk.