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Synthrapol is used to prevent backstaining, which will result if the excess dye is not removed when dying. It is a mild soap specifically made to suspend and carry the dye from the fiber. Rinse the fiber thoroughly with a small amount of synthrapol, then add one tablespoon to each wash load when laundering the fresh dyes.
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🇺🇸 Ship from USA · On Agora since 2026
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