What's the deal with this #PTD stuff? Read on, and learn...
Use is exactly the same as Synthrapol - 1/4 cup per washing machine load, rayon, hemp, etc. and 1/8 cup (1 oz) for silks or front loading wash machines. Best used with HOT (140°F or higher) water, both as a pre-wash to clean and prepare fabric for dyeing, get rid of fingerprints, oils, silk worm gum, and other things that cause the dye not to adhere well, and as an after-wash to get the excess dyes out. Also used, in the case of tie-dye, batik, or other situations where multiple colors are involved, to hold the dye out in suspension so it doesn't re-deposit where it isn't wanted. Gets out excess dye better and faster than normal household detergents so that items are safe to wash with others in the future. Is pH neutral like Synthrapol, so it discourages "setting" of loose Fiber Reactive dye particles where they are not wanted, and is easier on wool and silk than high pH detergents.
This detergent works best with HOT water, when washing out excess dye, particularly Fiber Reactive Dye. You are getting out the excess loose dye molecules that have not been chemically bonded to the fabric. This is a good thing! Then you can rest assured that the dye won't bleed on you, or the family underwear, the next time you wash it. Hot water is also best for the pre-washing we discussed above. Acid Dyes for wool and silk are a different story - hot water can actually break the bonds of the acid dye and cause more washout of color than you would want. Wash wools and silks dyed with Acid Dyes in cool to warm water.
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