Oak Gallnut Extract.
Very high quality tannins from the gallnuts growing on the oak trees. This ellagic tannin has a tannin content of > 95 %. The light yellow powder in granular form produces almost no dust during handling.
When used on its own gallnut extract produces light beiges on wool, cotton and silk. With an iron after-bath, the colour changes to greys and black.
Use at 6% WOF. Dissolve in cold or hot water.
Oak Gallnut Powder
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