The only natural products still in regular use are logwood and cochineal. The Colour and Textiles Gallery of the Colour Museum explains the special processes needed today to dye synthetic materials, such as rayon.
कुदरती पदार्थों में से सिर्फ लॉगवुड और किरमिज से अब भी रंग तैयार किए जाते हैं ।