Caring for Rayon
How do You Keep Rayon From Shrinking
By giving it the proper care when it gets dirty. Use cold water in the wash, a very gentle or delicate cycle, and place as few clothes in the washing machine at the same time as possible.
Then you want to avoid the dryer and hang drying as even hangers can influence the fabric. Lay the material out flat and let it air dry out of the sun. The two things you are avoiding that causes shrinkage in rayon is heat and agitation.
If you can avoid those two influences then your rayon items should remain the same size. Of course, you can save yourself the work and have the rayon items sent out to the cleaners and give them the worry.
What To do When Rayon Shrinks
You can donate the clothing or bedding items to charity thrift stores or other thrift shops. Or you can pass it on down to your children and see if it fits them or their beds. Or you can use the previous two methods already mentioned and a couple more that are about to be mentioned.
A clothes steamer can help you stretch your rayon clothing out. After using the above two methods, let the fabric almost dry then use steam to stretch the material further. A steam iron can do this step as well and you will be using your free hand in both options to do the stretching as you steam.
Why Does Rayon Shrink?
This material is a natural fiber made with chemicals to bring texture and the ability to mimic different more expensive fabrics. When the natural fibers get damaged, abused, or mistreated, then you can expect the fibers to shrivel up in response. When that happens the rayon fabric will shrink.
Unless the material has been treated by the maker to resist shrinking. In that case, you should not see any shrinking as the natural fibers are protected by yet another chemical. Shrinkage is all in the natural fibers although that shrinking rate may not be a lot. Protect them and you stop shrinking from taking place.