科学者研究表明,从古至今,人们的头发颜色有黑色、金黄色、绿色、灰白色、赤褐色和红棕色七种。这些发色具有民族、种族特色,又具有但强的遗传性。五颜六色的头发并非只是装饰物,它还有保护头部、遮阳散热的作用。到了冬季,寒风瑟瑟,头发像一顶棉帽,发挥着保暖御寒的功能。正因为如此,世界各地不同的自然环境就形成了不同类型的 Scientists have shown that since ancient times, people’s hair color is black, golden yellow, green, gray, auburn and red-brown seven. These hair color with ethnic, ethnic characteristics, but also has a strong hereditary. Colorful hair is not just a decoration, it also protects the head, sun shade cooling effect. In the winter, the wind is blowing and the hair is like a cotton hat, playing the warmth-keeping function. Because of this, different types of natural environments are formed in different parts of the world