Should you prewash trims? This is something that I think varies depending on the trim and what you plan to do with it.
Last year sometime I started working on a jumper (pinafore). It is a light pink with cherries and strawberries on it and I wanted to add some red bias tape trim as a contrast. When I got the bias tape out I looked at the vivid color, and thinking about how reds sometimes run pretty badly, I decided maybe I should prewash it. The packaging had a “guarantee” on it to the effect that this bias tape was “colorfast” and if it ran and ruined a project the manufacturer would pay for the materials. Well, I’m a skeptic on some things and that was one of them. I decided to prewash that bias tape anyway.
Good thing I did!
Yeah. That doesn’t look colorfast to me either.
Here’s my bowl of pretty rosy water.
My jumper would have been ruined for sure. I wonder if their guarantee is as lousy as their “colorfast” dye? Good thing I didn’t have to find out!