| 摘要 |
<p>A composition comprising a nitrate reductase enzyme, an electron donor, nitrate ions and a diazonium salt precursor, is new. Independent claims are also included for: (1) dyeing keratinic fibers by applying the composition; (2) a dyeing kit comprising 2-6 compositions, each containing a nitrate reductase enzyme, an electron donor, nitrate ions, a diazonium salt precursor, a coupler and/or a nitrate reductase cofactor, provided that the set of compositions comprises a nitrate reductase enzyme, an electron donor, nitrate ions, a diazonium salt precursor and a coupler, and that no composition contains a nitrate reductase enzyme, an electron donor and nitrate ions.</p> |
