21. Chemical dyes tended to produce a very strong, dark colour compared to the natural dyes . 22. Natural dyes are still extensively used.23. After that, they stamp the cloth with beautiful designs using natural dyes of earthly shades. 24. Sheep and goats provided the wool, natural dye could be derived from plants and minerals. 25. Abbott acquired her own loom and began experimenting with unspun wool and natural dyes and fibres. 26. Most natural dyes are mordant dyes and there is therefore a large literature base describing dyeing techniques. 27. Mordants were often required to alter the hue and intensity of natural dyes and improve color fastness. 28. They also use Kalamkari technique, a type of painting natural dyes onto cotton by bamboo pen. 29. Henna is a reddish natural dye made from the leaves of " Lawsonia inermis ". 30. In 2000, the Turkish Cultural Foundation set up the Cultural Heritage Preservation and Natural Dyes Laboratory.
