"Your hair is red."

来源：色素生成于头发根部，红色头发可以由遗传或颜色染料产生。

Example sentences:

She always wears a red dress to match her red hair.
她总是穿红色的裙子来配合她的红色头发。
His red hair makes him stand out in the crowd.
他的红色头发使他在人群中显眼。
I'm thinking about dyeing my hair red.
我正在考虑染红色头发。