| 摘要 |
<p>A method for permanently dyeing hair which comprises subjecting said hair to a number of treatments, having a set time interval between each two consecutive such treatments, wherein each treatment comprises steps (a) and (b) below: (a) contacting said hair, for a period of about 5 seconds to about 5 minutes with a recently made mixture of: part ai: dye intermediates in water and fatty alcohol at alkaline pH, part aii: an oxidizing compound such as hydrogen peroxide in water at acidic pH (b) rinsing said mixture from said hair with water; and wherein said number of treatments is between about 2 to about 30; and wherein said set time interval between each two consecutive treatments is between about 8 hours and 30 days.</p> |
