2. Oak bark, valonia, and gambier.
3. Oak bark, quebracho extract, and myrobalan extract.
4. Chestnut, quebracho and valonia extracts.
5. Chestnut and oakwood extracts.
6. Oakwood and quebracho extracts, and divi-divi or algarobilla.
7. Quebracho extract, myrobalans, and valonia.
8. Quebracho, mangrove, and valonia extracts.
9. Oakwood, mimosa, and valonia extracts.
10. Hemlock and oak extracts (American union tannage).