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Old 12-31-2007, 10:48 AM   #6
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Originally Posted by Shandeh View Post
This site says Food Colorings are a subset of the class of dyes known as Acid Dyes. They can be used to dye protein fibers only: that is, wool, silk, and also sometimes nylon. Heat is required; room-temperature dyeing will usually produce much less washfast results.

Is acrylic yarn, nylon?
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