There's some variation depending on hair colour but for an average adult the strand count is 100,000, so losing 100 a day is not too bad.

不同的发色会有不同的变化，但是对于一个普通的成年人来说，头发的数量是10万根，所以每天失去100根也不是太糟糕。

youdao

I've forgotten what my real hair colour is.

我已经忘记自己的头发原来是什么颜色了。

youdao

The rarity of hair colour will dictate the price.

头发颜色的稀少程度决定它的价格。

youdao

Rather than indicating hair colour, educational background or height, suitors tick boxes indicating geographical or industrial desires.

ECONOMIST: Matches made in heaven

They could estimate with an accuracy of more than 80% whether a person's hair colour was blonde or brown.

BBC: Hair colour predicted from genes

In the study, the authors used Hirisplex to predict hair colour phenotypes in a sample drawn from three European populations.

BBC: Forensic test can predict hair and eye colour from DNA