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随着人们生活水平的不断提高,染发近年来正成为一种美容时尚。最近对1916年至1946年间出生的767名城市中老年人染发情况调查的结果表明,男性染发率为16%,女性为46%,平均为34%,年人均染发次数为8次,平均染发年限为6～7年,人均累积染发次数为74次。使用染发剂的主要目的是美化头发颜色,包括使白发染成黑色和其他各种丰富多彩的颜色。但由于染发剂中含大量不同种类化学物质,其中许多化学成分具有生物学活性,可能引起局部皮肤和全身过敏反应,或可能与某些肿瘤的发生有关。
As people’s living standards continue to improve, hair dye is becoming a beauty fashion in recent years. The recent survey of the hair color of 767 urban middle-aged and elderly people born between 1916 and 1946 showed that the rate of hair coloring was 16% in men and 46% in women, with an average of 34%. The average number of hair dyeing per year was 8 and the average hair age For 6 to 7 years, the cumulative number of hair dye per capita for 74 times. The main purpose of using hair dyes is to beautify the hair color, including the white hair dyed black and various other colorful colors. However, due to the large number of different types of chemicals contained in hair dyes, many of which are biologically active may cause topical and systemic allergic reactions or may be associated with the development of certain tumors.