This invention relates to a permanent dye for dyeing keratin fibers, in particular a dye based on the extract of Terminalia chebula, also known as black mirobalan or mirobalan chebula, an evergreen tree of 30 meters tall, growing in southern Asia in the territory from India / Nepal to southwest China and to Sri Lanka, Malaysia and Vietnam, bearing dark stone-fruit from 2 to 4.5 cm long with longitudinal scars. Non-permanent hair dye contains either active particles that exceed 10 Angstroms and can only cover the hair shaft, and not diffuse through the pores into the hair shaft, or active particles that do not exceed 10 Angstroms and can diffuse through the pores into the hair shaft, but if inside the hair shaft, they can react or associate either with other particles with the formation of a product exceeding 10 Angstroms, or with the inner surface of the hair shaft and, thus, become trapped inside the hair shaft. Thus, the present invention provides a permanent dye for dyeing keratin fibers, the dye comprising: (d) a solution of an iron (II) salt or iron (III)； (e) a solution of an aqueous extract of Terminalia chebula and (f) a solution of at least one developer of a color selected from the group consisting of polyphenol, decomposition products of polyphenol, its derivatives and mixtures of polyphenols； where the salt of iron (II) or iron (III) and at least one color developer selected from the group comprising polyphenol, polyphenol decomposition products and its derivatives interact with the formation of the complex, and where polyphenol, polyphenol decomposition products, itsДанное изобретение относится к перманентному красителю для окрашивания кератиновых волокон, в частности красителю на основе экстракта Terminalia chebula, известному также как черный миробалан или миробалан хебула, вечнозеленого дерева 30-метровой высоты, произрастающего в южной Азии на территории от Индии/Непала до юго-западного Китая и до Шри-Ланка, Малайзии и Вьетнама, приносящего темные к
