A fabric finish is supposed to support the fibers or the fabric and keep it in shape. In the past, housewives used to starch their shirts or blouses with it so they wouldn’t wrinkle as quickly. They also sprayed it on the bedding before ironing. I can still remember the smell. Today, you have to look for fabric finish or laundry starch at the drugstore. Modern fabrics are often wrinkle-resistant or treated in such a way that they no longer need to be starched.
In the world of crafts, though, you still need it. Ruth has listed a few methods for starching textiles. Of course, this works especially well with small items or thin yarns. I once knitted some very fine star-shaped doilies and then starched them with sugar water. I still use them as Christmas decorations today (see the top left of the picture).
But methods have also been developed for sturdier textiles. For example, with my mother-in-law’s permission, I transformed her old lace doilies into an
“art object.” If you click on the link, you can see what became of my mother-in-law’s decorative doilies.
Best regards, Ina