Gallnut Extract 20 gram pack – a substitute for Tannic Acid in dyeing wool, cotton and silk and mordanting cotton.
 
When used on its own gallnut extract produces beiges on wool, cotton and silk. With an iron after-bath, the colour changes to greys and black. Gallnut extract can also be used to sadden other colours.
Gallnut Extract is weighed and sealed in a polythene bag. The bag is then labelled, placed in a padded envelope and posted to you First Class