I bought this long ago, when it was sold in a small brown container. My sister recommended it, and boy, was she right. We both agree that one should never clean antique samplers, nor even our own stitched ones unless absolutely necessary. However, if it has to be done, this is THE product to use. It's worked beautifully for me and I recommend it without reservation if you really need it. Linens and silk threads aside, I've used it on old cotton table runners, napkins, etc., when they have foxing or other stains. It doesn't always work, though, and you'll still have to boil and bleach sometimes.