染发时,温度太低不易着色,因而必须在20℃以上。染发前必须先做试验,如出现瘙痒、红肿等现象,就不要染发,以防过敏。染发前必须在前额和后颈的发际处涂油脂雪花膏以保护该处的皮肤。染发后理成卷曲的波浪式,以增加柔软感。染发后不可马上使用含酒精的溶液或制剂。烫发应在染发三个月后进行。染后的头发,每隔两星期应再在发根处染一次,以免让新生发破坏了原有的整体美感。染发用最理想的颜色是深灰色和黑咖啡色。因为太深的黑色与原来的头发颜色对比太大,会使染过的头发有不真实感。 Hair dye, the temperature is too low easy to color, and therefore must be above 20 ℃. Before dyeing hair must do the test, such as itching, redness and other phenomena, do not dye hair, to prevent allergies. Prior to hair coloring, ointment must be applied to the hairline of the forehead and neck to protect the skin. After dyeing hair into a curly waves, in order to increase the soft feeling. Do not use alcohol-containing solutions or preparations immediately after hair coloring. Perm should be carried out after three months in the hair. After dyeing the hair, every two weeks should be dyed hair root again, so as not to let the new hair damaged the original overall beauty. The best colors for hair coloring are dark gray and dark brown. Because too deep black color contrast with the original hair too much, will make the dyed hair unrealistic.