| 摘要 |
PCT No. PCT/EP87/00465 Sec. 371 Date Apr. 14, 1988 Sec. 102(e) Date Apr. 14, 1988 PCT Filed Aug. 19, 1987 PCT Pub. No. WO88/01161 PCT Pub. Date Feb. 25, 1988.In a method for the oxidative dyeing of human or animal hair a hair dyeing agenet is prepared from at least one oxidation dye in creme or gel form, which is adjusted to a pH of 5.9 to 6.9. The preparation is performed with the addition of at least one alkali metal salt or alkaline earth metal salt as catalyst, which is added simultaneously with or immediately after the mixing of the oxidation dye with the oxidizing agent, the amount added being such that it is contained in the treatment-ready hair dyeing agent in proportions between 0.0001 and 1.00 wt.-%, preferably between 0.0004 and 0.001 wt.-%.
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