8 oz Ludigol
Really, we don't recommend Ludigol anymore. Don't buy it. In our tests Ludigol does not make a difference in your tie dye project.
Only buy Ludigol if you've tested it for whatever you do and you know it makes some sort of difference. We don't think it does
Ludigol is used in tie dyeing or other direct application dyeing. It is generally not used in solid color dyeing.
In the past, Ludigol was thought to be an important ingredient, helping the dye stay stronger when mixed for a long period of time. However, we have done numerous tests and feel it is less important now than it once was. Dyes have become stronger and more robust, and through extensive testing, we have found Ludigol does not hold the same importance that it used to.
Ludigol has also become more expensive and difficult to find, as it has already been deemphasized by many in their dyeing processes. We currently have a small amount of Ludigol left on hand, and once we run out, it is unknown when it will be available again.
You can comfortably skip using Ludigol in your Dye mix, and should not see any negative difference in results.
Ludigol is used in tie dyeing or other direct application dyeing. It is generally not used in solid color dyeing. Reactive type dyes slowly break down once they’re mixed with water, and over time the dye becomes less effective. Soon the dye solution will lose all effectiveness. Ludigol is added to the dye to keep the dye from breaking down in the water at higher. Ludigol keeps the dye fresher longer, and allows more dye to react with the fabric, helping the colors to come out brighter. We estimate that two ounces of ludigol will prepare enough chemical water to tie-dye about 60 t-shirts. Therefore, an eight ounce bag will prepare enough for around 240 t-shirts.