| 摘要 |
<p>Composition (I), which is mixed at the time of use with an oxidizing agent, comprises (a) one or more oxidation bases (para-aminophenols or their addition salts with an acid), which is present at >= 1.5 wt.% before mixing with an oxidizing agent; (b) one or more additional dye precursors of the different oxidation bases, which are other than (a); and (c) dipropylene glycol (>= 3.5 wt.%, before mixing with an oxidizing agent). Independent claims are included for: (1) dyeing keratin fibers, comprising mixing (I) with a composition comprising one or more oxidizing agents, and then applying to keratin fibers for a time to develop desired color; and (2) device with several compartments including a first compartment containing a composition comprising para-aminophenols, dipropylene glycol, or the dye precursors other than para-aminophenol and optionally one or alkaline agents, a second compartment comprising one or more oxidizing agents, and optionally one or more fatty, para-aminophenols, dipropylene glycols, or the dye precursors.</p> |
