Originally Posted by gutshot
White vinegar. I appreciate your concerns. Be sure to wash any material you dye after it is done cooking since there will be residual dye on it. I use white paper towels for this step. Once the residual dye is off however there is NO bleeding and the color will stay fast.
Kool-aid is actually an acid dye with flavor added. You get more fade from premium fly tying materials than this stuff, and there is zero harmful products associated with it other than hot water.
I figured vinegar was your catalyst
. I have made a vented sock tube to heat treat most of my dyed materials in a dryer. I plan on picking up some good old Kool-Aid this week and experimenting with a few colors. Thanks for your input!